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The ACE Publishing Paperback Catalogue
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Covering 30+ Years of Paperback Publications ~ 1950s thru 1980s
Compiled from many sources both in print and online.
Online since 2017 as an extra-section covering the ACE Doubles Books at Andre-Norton-Books.com and moved here in March of 2025
Last Updated 02-12-26

ACE Single Title Paperbacks

50000 thru 59999

 

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TITLE FRONT COVER BACK COVER EXTRA IMAGE/S AUTHOR GENRE DATE PRICE EDITION COVER BY NOTES
50347 -0 Land of Dreams James P. Blaylock ACE fantasy 1988
50366 The Lemurian Stone Stephen F. Hickman Sci-Fi 1988 1st ACE printing and PBO Stephen Hickman Cover, frontspiece, and map by Stephen Hickman and is well known for his cover art and illustrations. This represents his foray into writing, as well as illustrating, his first book (have not found anything else).
50414 -0 Love Not Human Gordon R. Dickson Sci-Fi 1981 1st ACE printing Short story collection. 
50436 -1 Luck of the Wheels Megan Lindholm ACE fantasy 1989 1st ACE printing and PBO Richard Hescox 4th book in the Ki and Vandien adventure (fantasy) series.
50485 -X Lunar Descent Allen Steele Sci-Fi 1991 Bob Eggleton
50501 The Lute and the Glove Katherine Wigmore Eyre ACE Gothic Novel nd c.1962; nd; 2nd ACE printing
Original title: The Lute and the Glove
The Lute and the Glove was originally published as ACE K-165 (1962).

 
50502 The Lute and the Glove Katherine Wigmore Eyre ACE Gothic Novel nd c.1962; nd; 3rd ACE printing Note that these two editions use the same cover art.  However, ACE 50502 cover art is reversed relative to the cover art of ACE 50501.  They also have different headers (ACE 50501 is "First in Gothics" wit the woman in the moon graphic, whereas ACE 50502 is "An ACE Gothic").
50503 -1 Mistress of Fear Katherine Wigmore Eyre ACE Gothic Novel nd 1962; nd
50531 -7 Madouc Jack Vance
(aka: John Holbrook Vance)		 Sci-Fi 1990 Sanjulian
50532 -5 Madouc Jack Vance
(aka: John Holbrook Vance)		 Sci-Fi 1991 Sanjulian
51010 -8 Lyrec Gregory Frost Sci-Fi 1984 Romas
51011 -6 Lyrec Gregory Frost Sci-Fi nd
51012 -4 Lyrec Gregory Frost Sci-Fi 1986
51200 The Real Ma Barker Miriam Allen Deford Nonfiction nd 1st ACE printing Contains 16 pages of photographs. 
51353 -0 The Macao Massacre Nick Carter Spy Thriller 1985 1st ACE printing - Charter imprint Killmaster #198
51354 -9 Macao Nick Carter Spy Thriller nd 1st ACE printing - Charter imprint
51356 -5 The Machiavelli Interface Steve Perry Sci-Fi 1986 1st ACE printing Richard Berry Book 3 in the Matador trilogy
51358 -1 Machines That Kill Fred Saberhagen
and Martin Harry Greenberg (Eds.)		 Sci-Fi 1984 1st ACE printing and PBO Walter Velez Short story collection that includes Killdozer! (Theodore Sturgeon); Alpha Ralpha Boulevard (Cordwainer Smith); Hunting Machine (Carol Emshwiller); Auto-da-Fé (Roger Zelazny); Second Variety (Philip K. Dick); Under the Hammer (David Drake); Lost Memory (Peter Phillips); Making the Connections (Barry N. Malzberg); Steel (Richard Matheson); The Iron Chancellor (Robert Silverberg); The Wabbler (Murray Leinster); The Cruel Equations (Robert Sheckley); Combat Unit (Keith Laumer); Fondly Fahrenheit (Alfred Bester); and Goodlife (Fred Saberhagen).
51376 -X Majyk By Accident Esther Friesner Fantasy 1st ACE printing and PBO
51388 The Mad God's Amulet Michael Moorcock Sci-Fi nd Book 2 of the Runestaff Series
51401 The Mad King Edgar Rice Burroughs Sci-Fi 1969 c.1914; 1964; 1969 Frank Frazetta listed as "complete and unabridged"
cover and title page by Frank Frazetta
An "ACE Science Fiction Classic" on logo. This may be the 2nd ACE printing as it has the same cover and interior art as ACE F-270 (1964).
51402 The Mad King Edgar Rice Burroughs Sci-Fi 1972 c.1914; 1964; 1969; 1972 Frank Frazetta
51403 The Mad King Edgar Rice Burroughs Sci-Fi 1976 c.1914; 1964; 1969; 1972; 1976 Boris Vallejo
51404 The Mad King Edgar Rice Burroughs Sci-Fi nd c.1914; 1964; 1969; 1972; 1976; nd Boris Vallejo
51409 The Mad King Edgar Rice Burroughs Sci-Fi nd c.1914; 1964; 1969; 1972; 1976; nd Boris Vallejo
51500 Madame Solario Anonymos nd c.1956; nd The header for this volume is "A Novel of Forbidden Love." Could be Gothic or soft-porn.
51510 -X Madwand Roger Zelazny Sci-Fi 1981 1st ACE trade printing John Berkey The second volume of the Changeling series.
Interior illustrations by Judy King Rieniets
51511 -8 Madwand Roger Zelazny Sci-Fi 1982 c.1981; 1982; 1st ACE printing John Berkey Interior illustrations by Judy King Rieniets
51512 -6 Madwand Roger Zelazny Sci-Fi 1984 c.1981; 1982; 1984; 2nd ACE printing John Berkey Interior illustrations by Judy King Rieniets
51535 -5 Magic For Sale Avram Davidson (Ed.) ACE fantasy 1983 1st ACE printing and PBO James Warhola Short story collection.
51544 -4 The Magic Goes Away Larry Niven Sci-Fi 1978 Boris Vallejo  listed as "first publication anywhere!" and has a banner advertising the "Illustrated" nature of this edition.
Interior illustrations by Esteban Moroto
51546 -0 The Magic Goes Away Larry Niven Sci-Fi 1979 c.1978; 1979 Boris Vallejo This edition is listed as "First Mass-Market Edition!" and has a banner advertising the "Massively Illustrated" nature of this edition.  The publication history for this ACE Letter-Number is a bit confusing.  The copyright page has first mass-market printing as October 1979, but as yet no-one seems to have one with a full number line. The trade paperback was printed twice, but neither printing had a number line, although both identify dates in 1978. The third mass market printing [by number line] identifies a second mass market printing as November 1979, but gives no other date for itself (Thank you Bill) - but regardless, ACE once again provides another headache.
51547 -9 The Magic Goes Away Larry Niven Sci-Fi 1981 c.1978; 1979; 1981; 5th ACE printing Boris Vallejo Note that this volume has a particular banner (lower right) that is found on the ACE 51552-5 edition. Also, the number line ends with ‘5’ as the lowest number, but it may actually be the sixth overall printing. Which then begs the question:  where's the edition identified as a fourth edition …..
51548 -7 The Magic May Return Larry Niven Sci-Fi 1983 c.1981; 1983; 1st ACE printing and PBO Alicia Austin Interior illustrations - about 40 - by Alicia Austin
51549 -5 The Magic May Return Larry Niven Sci-Fi 1983 c.1981; 1983; 1st ACE mass market printing Alicia Austin Collection of six short stories in another of Larry Niven's sandboxes.  There is another edition, using the same ACE Letter-Number series, but dropping the "First Mass Market," with a publication date of October 1981 (thus, a second or third edition).
51550 The Magic of Dr. Farrar Adeline McElfresh ACE Nurse Romance 1965 1st ACE printing
51552 -5 The Magic Goes Away Larry Niven Sci-Fi c.1978; 1979; 1983; 7th ACE printing Boris Vallejo
51563 -9 The Magic Three of Solatia Jane Yolen Sci-Fi 1985 1st ACE printing
51569 -X A Wizard in Absentia Christopher Stasheff Sci-Fi 1993 1st ACE printing Note that this story is Seriously out of sequence with the ACE Letter-Number series numbering scheme (argh).
51590 Mahars of Pellucidar John Eric Holmes Sci-Fi 1976 listed as "first paperback publication"
This is one of the few Authorized novels based upon the ERB series (copyright is to both the author and Edgar Rice Burroughs, Inc.)
51600 The Magic Power of Emotional Appeal Roy Garn Self-Help nd ACE Star edition
51604 -1 Make Room, Make Room Harry Harrison Sci-Fi 1980 1st ACE printing
51621 -1 The Maker of Universes Philip Jose Farmer Sci-Fi 1977 c.1965; 1977 Boris Vallejo The first book of the World Of The Tiers series
51624 -6 The Maker of Universes Philip Jose Farmer Sci-Fi 1977 c.1965; 1977 Boris Vallejo Printed (at least) twice with the same ACE Letter-Number, price, and cover in December 1980 (4th printing) and sometime in 1981 (5th printing).
51625 -4 Malverne Hall Rachel Cosgrove Payes ACE Gothic Novel nd c.1970; nd
51626 Malverne Hall Rachel Cosgrove Payes ACE Gothic Novel 1970 For the aging ACE Gothic Romance reader "Easy to Read - Large Print."
51627 -0 The Maker of Universes Philip Jose Farmer Sci-Fi 1982 c.1965; 1977; 1980; 1981; 1982; 6th ACE printing Boris Vallejo
51633 -5 The Jamaican Exchange Nick Carter Spy Thriller George Gross listed as "First Time In Paperback"
51634 -3 Killer's Gun Ray Hogan Western Please note that this title is out of ACE Letter-Number series sequence.
51635 The Man From Bozeman Don P. Jenison Western 1974 1st ACE printing
51639 The Man From Colorado Louis Trimble Western c.1963; nd The Man From Colorado was originally published in ACE Double F-214 (1963) bound with Bill Burchardt's The Wildcatters. It was later published in ACE Double 51638 (nd) bound with Louis Trimble's Marshall of Sangaree.
51642 The Man From Barranca Negra Ray Hogan Western c.1964; 1972 The Man From Barranca Negrea was originally published in ACE Double F-272 (1964) bound with No Job For A Cowboy by Stephen Payne.
51645 -9 Mallory's Luck Kathleen A. Shoesmith ACE Gothic Novel 1974 c.1971; 1974; 1st ACE printing
51647 -5 The Malacia Tapestry Brian Aldiss Sci-Fi 1978 1976; 1978; 1st ACE printing Rowena Morrill Interior art by G.B. Tiepolo and Francesco Maggiottoc
51648 -3 The Malacia Tapestry Brian Aldiss Sci-Fi 1981 c.1976; 1978; 1981; 2nd ACE printing Rowena Morrill Interior art by G.B. Tiepolo and Francesco Maggiottoc
51650 -5 Malzberg At Large Barry Malzberg Sci-Fi 1979 1st ACE printing and PBO Bob Adragna Malzberg At Large is a collection of six short stories.
51664 -5 Glory Lane Alan Dean Foster Sci-Fi 1987 James Gurney This volume is seriously out of whack with respect to the ACE Letter-Number 'scheme'.
51700 The Hollow Crown Affair David Mcdaniel Spy Thriller 1969 Man From U.N.C.L.E. # 017
51701 The Unfair Fare Affair Peter Leslie Spy Thriller 1968 Man From U.N.C.L.E. # 018
51702 The Power Cube Affair John T. Phillifent Spy Thriller Man From U.N.C.L.E. # 019
51703 The Corfu Affair John T. Phillifent Spy Thriller 1967 Man From U.N.C.L.E. # 020
51704 The Thinking Machine Affair Joel Bernard Spy Thriller 1967 Man From U.N.C.L.E. # 021
51705 The Stone-Cold Dead In The Market Affair John Oram
(aka: John Oram Thomas)		 Spy Thriller Man From U.N.C.L.E. # 022
51706 The Finger in the Sky Affair Peter Leslie Spy Thriller 1966 Man From U.N.C.L.E. # 023
51809 The Man In The High Castle Philip K. Dick Sci-Fi 1988 1st ACE printing
51841 The Man in the Mews Joy Packer ACE Gothic Novel nd c.1964; 1966; nd; 2nd ACE printing The Man in the Mews was originally published as ACE G-572 (1966).
51850 The Man From Nowhere T. (Theodore) V. Olsen Western nd c.1959; nd
51855 -9 The Man in the Mews Joy Packer ACE Gothic Novel nd c.1964; 1966; nd; 3rd ACE printing
51857 -5 Man of Two Worlds Frank Herbert a
nd Brian Herbert		 Sci-Fi 1987 1st ACE printing John Schoenherr
51860 -5 The Man on the Blood Bay Kyle Hollingshead Western 1977 1st ACE printing
51882 Man On The Run Giles A. Lutz Western 1971 George Gross
51886 -9 The Mansions of Space John Morressy Sci-Fi 1983 1st ACE printing and PBO
51902 -4 The Man Who Counts Poul Anderson Sci-Fi 1978 c.1958; 1967; 1978; 2nd ACE printing Michael Whelan Originally published as War of the Wing-Men in ACE Double D-303 (1958) bound with The Snows of Ganymede. It was later published as ACE Single G-634 (1967).
51903 The Man Who Died Twice Lois Paxton
(aka: Lois Dorothea Low)		 ACE Gothic Mystery 1968 Elaine Duillo
51904 -0 The Man Who Counts Poul Anderson Sci-Fi 1979 c.1958; 1967; 1978; 1979; 3rd ACE printing Michael Whelan
51906 -7 The Man Who Corrupted Earth G. C. Edmondson Sci-Fi 1980 1st ACE printing Attila Heija
51910 The Man Who Japed Philip K. Dick Sci-Fi 1973 c.1956; 1973; 2nd ACE printing Dean Ellis The Man Who Japed was originally published in ACE Double D-193 (1956) bound with E. C. Tubb's The Space-Born.
51916 -4 The Man Who Never Missed Steve Perry Sci-Fi 1985 1st ACE printing James Gurney First book of the "Matador" series.
51918 The Man Who Never Missed Steve Perry Sci-Fi 1986 c.1985; 1986
51921 -0 The Man Who Sold Death Nick Carter Spy Thriller 1974 Charles Copeland The Man Who Sold Death was originally published by Award Books as AO1297 (1974). The Charter edition is reprinted with the same Charles Copeland cover art. The smaller "Nick Carter" cartouche portrait in the upper right is by a different artist.
51938 Marcus Welby MD: Rock A Cradle Empty Bruce Cassiday TV Tie-in 1970 1st ACE printing and PBO Novels based upon the Universal-ABC television series Marcus Welby, M.D., starring Robert Young as Marcus Welby, James Brolin as Steven Kiley and Elena Verdugo as Consuelo Lopez.  Interestingly, the copyright is held by Universal Television rather than Bruce Cassiday.
51939 Marcus Welby MD #2: The Acid Test Bruce Cassiday TV Tie-in 1970 Bruce Cassiday (who also wrote under the pseudonym Carson Bingham) wrote in a variety of genres (westerns, science fiction, crime, and juvenile delinquent) as well as producing novelizations of movies (such as Gorgo) and TV shows.
51941 Marcus Welby MD #3: The Fire's Center Bruce Cassiday TV Tie-in 1971
51943 -1 Marathon D. Alexander Smith
(aka: David Alexander Smith)		 Sci-Fi 1982 1st ACE printing John Berkey
51944 X Marianne, The Magus, and The Manticore Sheri S. Tepper ACE fantasy 1985 1st thus
51950 Marked Deck at Topango Wells William Colt Macdonald Western c.1968; nd; probably 2nd ACE printing Marked Deck at Topango Wells was originally published as ACE G-746 (1966).
51960 Margo Margo Fantini Non-fiction 1975 1st ACE printing
51965 Mark Coffin, U. S. S. Allen Drury Fiction 1980 1st ACE printing Political fiction from the author of Advise and Consent.
51966 -0 The Mark of Merlin Anne McCaffrey ACE Gothic 1978 1st ACE printing and PBO From the author of the Pern series, a gothic novel (gee, the things that I find).
51970 -9 The Mark of the Moderately Vicious Vampire Lionel Fenn Sci-Fi nd
51971 -7 The Mark of the Cat Andre Norton Sci-Fi 1992 1st ACE paperback printing Joe Burleson There is another printing of this ACE Letter-Number series in October 1993, identical except for the number line.
52009 -X At Amberleaf Fair Phyllis Ann Karr ACE fantasy nd 1st ACE printing This volume is also seriously out of whack with respect to the ACE Letter-Number 'scheme'.
52040 The Marshall of Pioche Nelson Nye Western c. 1966; nd; 2nd ACE single printing This edition has both the front and back cover with the same art.  I have seen a number of other ACE volume with this type of art arrangement.
52041 -3 The Marshall of Pioche Nelson Nye Western c. 1966; nd; 3rd ACE single printing The Marshall of Pioche was originally published in ACE M-136 (1966) bound with Ray Hogan's Panhandle Pistolero.  It was (I think concurrently) printed as an ACE single (M-136) with the same cover art as the ACE Double.  This edition has different cover art. 
52044 -8 The Martian Inca An Watson Sci-Fi 1978 1st ACE printing Stephen Hickman
52060 Mask of Words Jan Roffman ACE Gothic Novel nd c.1965; nd Original title: A Penny For The Guy
52075 The Mask of Circe Henry Kuttner Sci-Fi 1971 c.1948; 1971; 1st ACE printing and PBO Bob Pepper Interior illustrations by Alicia Austin
The Mask of Circe is a paperback original (PBO) edition of the story originally published in the May 1948 edition of pulp magazine Startling Stories.
52076 -6 The Mask of Circe Henry Kuttner Sci-Fi 1977 c.1948; 1971; 1977; 2nd ACE printing Michael Herring Interior illustrations by Alicia Austin
Note: this printing drops the frontispiece that was in the 1971 ACE 1st printing.
52077 -4 The Mask of the Sun Fred Saberhagen Sci-Fi 1979 1st ACE printing Dean Ellis
52078 -2 The Mask of the Sun Fred Saberhagen Sci-Fi 1981 c.1979; 1981; 2nd ACE printing Dean Ellis The 3rd printing has has the same ACE Letter-Number series as the 2nd printing.
52090 Masquerade of Evil Eve Zumwalt
(aka: John Jacob Niles)		 ACE Gothic Novel 1975 1st ACE printing Original title: Black is the Color
52091 -X Masquerade of Evil
and Flames Over The Castle		 Eve Zumwalt
(aka: John Jacob Niles)
and Diane LaPoint		 ACE Gothic Novel nd c.1975; nd Headlined as "An ACE Double Cameo" with a cameo medallion in the banner caption. These are priced at $2.25. This is actually an ACE Double with a single cover. This appears to be the only "double" issue in the Cameo series and was not referenced in the source that I found concerning this series. I also find it annoying that they did not use the "came ring" motif that is found in the ACE Gothic Cameo series.
Note that Masquerade of Evil was originally published as ACE 52090 (December 1975) whilst Flames Over The Castle was originally published as ACE 24070 (January 1975).
52099 -5 Masques Patricia Briggs ACE fantasy 1993 1st ACE printing Jean Pierre Targete
52100 Masque By Gaslight Viginia Coffman ACE Gothic Mystery 1970 1st ACE printing Masque By Gaslight was released under the pseudonym Virginia C. DuVaul.
52101 Masque By Gaslight Viginia Coffman ACE Gothic Mystery nd c.1970; nd
52102 -9 The Masquers Natasha Peters ACE Romance 1979 1st ACE printing and PBO
52105 -3 Masque World: An Anthony Villiers Adventure Alexei Panshin Sci-Fi 1978 c.1969; 1978; 2nd ACE printing Vincent DiFate
52110 Massage Parlor Jennifer Sills 1973 1st ACE printing
52115 -0 Masters of Everon Gordon R. Dickson Sci-Fi 1980 1st ACE printing Enric
52121 The Master of Montrolfe Hall Rohan O'Grady
(aka: June O'Grady Skinner)		 ACE Gothic Novel nd c.1967; nd Original title: Pippin's Journal
The Master of Montrolfe Hall was originally published as ACE K-215 (1967).
52122 The Master of Montrolfe Hall Rohan O'Grady
(aka: June O'Grady Skinner)		 ACE Gothic Novel nd c.1967; nd
52161 The Master of Phoenix Hall Edwina Marlow
(aka: T. E. Huff)		 ACE Gothic Novel 1972 c.1968; 1972; 2nd ACE printing H. Barton Original cover art by H. Barton for The Master of Phoenix Hall. Gouache on board. 28" x 18." Signed "H. Barton" by right side of woman's dress.
This story was also released under the pseudonym Jennifer Wilde. The Master of Phoenix Hall was originally published as ACE G-707 (1968).
52178 -9 Masters of Everon Gordon R. Dickson Sci-Fi 1980 c.1980; 1st mass market paperback Enric
52179 -7 Masters of Everon Gordon R. Dickson Sci-Fi 1981 c.1980; 1981 Enric
52207 -6 Matadora Steve Perry Sci-Fi 1986
52213 -0 A Matter of Time Glen Cook Sci-Fi 1985 1st ACE printing Barry Jackson
52241 The Maverick Star L. P. Holmes Western 1969 1st ACE printing and PBO
52250 -5 Maxwell's Demons Ben Bova (Ed.) Sci-Fi nd 1st ACE printing Contains 15 short stories from Analog.
52276 -9 The Mayan Connection Nick Carter Spy Thriller 1984 1st ACE printing - Charter imprint Killmaster #194
The Killmaster series appears to be another Nick Carter spy thriller variant
52303 -X McCade's Bounty William C. Dietz Sci-Fi 1990 1st ACE printing Kirk Reinhert Fourth story in the Sam McCade, interstellar bounty hunter, series.
This volume reprinted in November 1997 with the same ACE Letter-Number series but with cover art by Edwin Herder.
52340 The Meadows of Tallon Estelle Thompson ACE Gothic Novel 1974 1st ACE printing
52360 -9 The Med Series Murray Leinster Sci-Fi 1983 1st ACE printing James Warhola Combines the three Med Ship books: The Mutant Weapon, S.O.S. From Three Worlds, and This World is Taboo.
52400 Meeting at Infinity John Brunner Sci-Fi nd c.1961; nd; John Schoenherr listed as "complete and unabridged"
Meeting At Infinity was originally published in ACE Double D-507 (1961) bound with Kenneth Bulmer's Beyond the Silver Sky. Same cover art as on the ACE Double.
52410 Meet Nurse Lucinda Ray Dorien ACE Nurse Romance 1969 1st ACE printing
52417 -6 Memory Blank John E. Stith Sci-Fi 1986 1st ACE printing and PBO DB
52430 A Memory of Darkness Margaret Summerton ACE Gothic Novel 1967 1st ACE printing
52431 A Memory of Darkness Margaret Summerton ACE Gothic Novel 1973 c.1967; 1973; 2nd ACE printing
52435 Memory of Megan Marc Lovell
(aka: Mark McShane)		 ACE Gothic Novel 1973 1st ACE printing George Ziel Original title: The Ghost of Megan
52437 -0 Memory of Megan Marc Lovell
(aka: Mark McShane)		 ACE Gothic Novel nd c.1973; nd; 2nd ACE printing
52438 -9 Memos From Purgatory Harlan Ellison Sci-Fi 1983 1st ACE printing Barclay Shaw Short story collection from the wunderkid (who is now more an old wunderkid - but still deft and sharp and very interesting).
52440 The Men of Bastogne Fred McKenzie Non-fiction nd c.1968; nd; 1st ACE printing Forward by General A. C. McAuliffe, who uttered the classic reply "Nuts!"  Acknowledgements are by the author.
52441 The Men of Bastogne Fred McKenzie Non-fiction 1972 c.1968; August 1972; 2nd ACE printing Bruce Minney
52447 -8 The Mendoza Manuscript Nick Carter
(house pseudonym for Robert J. Randisi)		 Spy Thriller 1982 1st ACE printing - Charter imprint Killmaster #181
52460 The Men and The Mirror Ross Rocklynne Sci-Fi 1973 1st ACE printing Dean Ellis Original cover art by Dean Ellis for The Men and The Mirror. Acrylic on board, 25.75" x 15.25" with signature and details on verso.
52470 Men on the Moon Donald A. Wollheim (Ed.) Sci-Fi 1969 c.1958, 1969; 1st thus Gray Morrow This anthology was originally a part of ACE Double D-277. This special edition contains a 47-page section consisting entirely of commentary (28 short essays) by science-fiction writers on the 1969 Moon landing as well as the following short stories. Raymond Z. Gallun Operation Pumice, A. Bertram Chandler Jetsam, Frank M. Robinson The Reluctant Heroes, H. B. Fyfe Moonwalk, and Murray Leinster Keyhole. A new introduction and concluding section has been added.
Gray Morrow (1934-2001) was an illustrator for the comics that included Tarzan, Buck Rogers, Flash Gordon, and Prince Valiant. He provided covers and illustrations for many fiction books and magazines, including the Perry Rhodan book series and Galaxy Magazine. Morrow was nominated for the Hugo Award for best professional artist in 1966, 1967, and 1968.
52552 -0 Merlin's Booke Jane Yolen ACE fantasy 1986 1st ACE printing and PBO Thomas Canty
52560 The Mercy Men Alan E. Nourse Sci-Fi 1970 c.1955; 1968; 1970 unknown Interior illustration by Jack Gaughan
An earlier (and briefer) version of this story was originally published as A Man Obsessed in ACE Double D-96 (1955) bound with Andre Norton's The Last Planet.
52561 -X The Mercy Men Alan E. Nourse Sci-Fi 1984 c.1955, 1968, 1970; 1984 James Warhola
52562 -8 Mercycle Piers Anthony ACE fantasy 1992 listed as "First Time in Paperback"
52813 -9 Metrophage Richard Kadrey Sci-Fi 1988 1st ACE printing and PBO Earl Keleny Volume 9 in the "New ACE Science Fiction Specials" edited by Terry Carr.
52831 Metropolis Thea Von Harbou Sci-Fi 1976 c.1963; 1976; 2nd ACE printing Vincent DiFate Metropolis was originally published as ACE F-246 (1963). Still not certain who the translator was for this edition.
52975 The Midnight Dancers Gerard F. Conway Sci-Fi 1971 ACE Science Fiction Special
52995 The Midnight Walker Rona Rondall
(aka: Rona Shambrook)		 ACE Gothic Novel 1973 1st ACE printing Jerome Podwil Note the "Read Easy Large Type" logo
53151 The Mightiest Machine John W. Campbell Sci-Fi 1972 c.1935. 1947; 1972; 2nd ACE printing Dean Ellis Note: this edition is one of the ACE "Science Fiction From The Great Years"
Original cover art by Dean Ellis for The Mightiest Machine. Gouache on board, 14" x 8.5" (image area), not signed.
53166 -0 Robot Warriors Charles G. Waugh
and Martin Harry Greenberg (Eds.)		 Sci-Fi 1991 1st ACE printing and PBO Joe Adams Short story collection with Introduction by Gordon R. Dickson.
53167 -9 Space Dogfights Algis Budrys, Charles G. Waugh
and Martin Harry Greenberg (Eds.)		 Sci-Fi 1992 1st ACE printing and PBO Joe Adams Short story collection with Introduction by Gordon R. Dickson.
53183 Millennium John Varley Sci-Fi 1983 Millennium was made into a film starring Kris Kristofferson and Cheryl Ladd.
53299 Mindkiller Spider Robinson Sci-Fi 1989 1st ACE imprint printing Copyright page has this edition as the fourth printing, but the first three printings were under Berkley imprint. Reprinted by Ace in March 1993 with the same ACE Letter-Number series and is marked as the 5th printing.  The cover art of this edition is the same used for the Berkley printings.
53306 -X Mind Transfer Janet Asimov Sci-Fi 1989
53330 The Mind Spider and Other Stories Fritz Leiber Sci-Fi 1976 c.1961; 1976; 1st thus in this edition Walter Rane The Mind Spider and Other Stories is a collection of 6 short stories that was originally published in ACE Double D-491 (1961) bound with The Big Time. However, in this edition, the sixth story Midnight in the Mirror World replaces the story Try and Change the Past that was published in the 1961 ACE Double edition.
53351 -5 Mindswap Robert Sheckley Sci-Fi 1978 1st ACE printing Darden Howard
53355 -8 Miracle Visitors Ian Watson Sci-Fi 1978 1st ACE printing Bob Adragna
53380 -9 Mirror Friend, Mirror Foe Robert Asprin
and George Takei		 Sci-Fi 1985 1st ACE printing Barclay Shaw
53381 -7 Mirror Friend, Mirror Foe Robert Asprin
and George Takei		 Sci-Fi 1986 c.1985; 1986; 2nd ACE printing Barclay Shaw
53382 -5 Mirrorshades: The Cyberpunk Anthology  Bruce Sterling (Ed.) Sci-Fi 1988 Collection of short stories in the "cyberpunk" genre by Greg Bear, Pat Cardigan, William Gibson, Rudy Rucker, Lewis Shiner, and Bruce Sterling.
53401 -5 The Missing Moon Harold Adams Mystery 1973 1st ACE printing and PBO January 1973; ;  Charter imprint
53476 -7 The Saint: The Misfortunes of Mr. Teal Leslie Charteris Mystery 1982 c.1934; April 1982 1st ACE Charter edition
53485 -6 The Missing Hour Jane Blackmore ACE Gothic Novel nd c.1959: nd
53486 -7 The Missing Hour Jane Blackmore ACE Gothic Novel nd c.1959: nd
53487 -2 The Missing Hour Jane Blackmore ACE Gothic Novel nd c.1959: nd
53500 Mission to the West T. (Theodore) V. Olson Western listed as "First Paperback Publication"
53503 -8 The Mists of Doom Andrew J. Offutt Sci-Fi 1980 c.1977; November 1980; 1st ACE printing Sanjulian Different cover art - s'posedly the 1st ACE printing.
53503 The Mists of Doom Andrew J. Offutt Sci-Fi nd c.1977; 1980; nd These volumes continue the saga of characters created by Robert E. Howard - Cormac Mac Art. Listed as volume #4 in this series. Once again, ACE has published the same tale with different cover art and the same five digit numerical sequence.
53506 -2 Mistworld Simon R. Green Sci-Fi 1992 1st ACE printing Sanjulian
53540 The Monadic Universe George Zebrowski Sci-Fi 1977 1st ACE printing A collection of short stories that includes First Love, First Fear; Starcrossed, Assassins of the Air, Parks of Rest and Culture, The Water Sculptor, Rope of Glass, Heathen God, Interpose, The History Machine, The Cliometricon, Stance of Splendor, The Monadic Universe, and an Introduction by Thomas N. Scortia
53541 -0 The Monadic Universe George Zebrowski Sci-Fi 1985 c.1977; 1985; 2nd revised ACE printing Colin Hay This volume contains all of the short stories from the 1977 edition as well as a foreword by Howard Waldrop Ideas That Will Kill Your Grandmother and an additional story titled The Word Sweep.
53560 Monk's Hollow John Marsh ACE Gothic Novel nd c.1968; nd; ACE Star edition Note this volume is in the "First in Gothics" as well as the "Read Easy/Large Type" format.
53561 Monk's Hollow John Marsh ACE Gothic Novel 1973 c.1968; June 1973; 2nd ACE printing
53570 The Missionaries D. G. Compton Sci-Fi 1972 1st ACE printing and PBO frontspiece by Jack Gaughan
53587 The Monster Men Edgar Rice Burroughs Sci-Fi 1969 c.1929; 1963; 1969 Frank Frazetta Title page illustration by Frank Frazetta
An "ACE Science Fiction Classic" on logo. This may be the 2nd ACE printing.  Text follows the 1929 hardcover edition.
The Monster Men was originally published as ACE F-182 (1963).
53588 The Monster Men Edgar Rice Burroughs Sci-Fi 1972 c.1929; 1963; 1969; 1972 Enric Note that this edition does not have an ACE logo.
53590 The Monster Men Edgar Rice Burroughs Sci-Fi 1977 c.1929; 1963; 1969; 1972; 1977 Boris Vallejo
53591 The Monster Men Edgar Rice Burroughs Sci-Fi 1979 c.1929; 1963; 1969; 1972; 1977; 1979 Boris Vallejo
53701 The Moon Maid Edgar Rice Burroughs Sci-Fi 1969 c.1923; 1962; 1969; 3rd ACE printing Roy G. Krenkel listed as "Complete & Unabridged"
The Moon Maid was originally published as ACE F-157 (1962) and ACE G-745.
An "ACE Science Fiction Classic" on logo. This edition uses the same cover art from F-157 and G-745, thus it would be the 3rd ACE printing.
There is an odd erratum on the copyright page: “Two sequels to this novel ‘The Moon Men’ and ‘The Red Hawk’, have been published as a separate Ace Book under the title of ‘The Moon Men’ (G-749, 50¢).” But that book was actually ACE G-748.
53702 The Moon Maid Edgar Rice Burroughs Sci-Fi 1974 c.1923; 1962; 1974 Frank Frazetta
53703 The Moon Maid Edgar Rice Burroughs Sci-Fi nd c.1923; 1962; 1974; nd
53704 The Moon Maid Edgar Rice Burroughs Sci-Fi 1976 c.1923; 1962; 1974; 1976
53705 -7 The Moon Maid Edgar Rice Burroughs Sci-Fi 1978 c.1923; 1962; 1974; 1976; 1978; 7th ACE printing
53719 -7 Moonheart Charles De Lint Sci-Fi 1984
53752 The Moon Men Edgar Rice Burroughs Sci-Fi 1974 c.1925; 1962; 1974 Frank Frazetta The Moon Men was originally published as ACE F-159 (1962). These volumes all use the same Frazetta cover art.
Title-page illustration by Roy Krenkel Jr.
53753 The Moon Men Edgar Rice Burroughs Sci-Fi nd c.1925; 1962; 1974; nd Frank Frazetta
53755 -3 The Moon Men Edgar Rice Burroughs Sci-Fi 1974 c.1925; 1962; 1974; 1978; 7th printing Frank Frazetta
53756 -1 The Moon Men Edgar Rice Burroughs Sci-Fi nd c.1925; 1962;1974; nd Frank Frazetta
53813 -4 Metrophage Richard Kadrey Sci-Fi 1988 1st ACE printing
53870 The Moon Is Hell John W. Campbell Sci-Fi 1973 c.1951; 1973; 1st ACE printing Note: this edition is one of the ACE "Science Fiction From The Great Years"
53899 Moon of 3 Rings Andre Norton Sci-Fi nd c.1967; 1970; nd Moon of 3 Rings was originally published as ACE H-33 (1967).
54000 Moon of the Wolf Leslie H. Whitten Mystery 1968 1st ACE printing Original title: Death of a Nurse
The other volume by this author is Progeny of the Adder (ACE H-053).
54101 Moon of 3 Rings Andre Norton Sci-Fi 1970 c.1967; 1970 John Schoenherr
54102 Moon of 3 Rings Andre Norton Sci-Fi 1972 c.1967; 1970; 1972 John Schoenherr
54103 Moon of 3 Rings Andre Norton Sci-Fi 1974 c.1967; 1970; 1972; 1974 John Schoenherr
54104 -6 Moon of 3 Rings Andre Norton Sci-Fi 1978 c.1967; 1970; 1972; 1974; 1978;5th ACE printing Paul Alexander
54172 -0 The Moon's Fire-Eating Daughter John Myers Myers Sci-Fi 1984 1st ACE printing Walter Velez Sequel to Silverlock.
54201 Moondust Thomas Burnett Swann Sci-Fi 1977 c.1968; 1977; 2nd ACE printing Stephen Hickman Moondust was originally published as ACE G-758 (1968).
54215 -8 The Moon In Hiding Teresa Edgerton Sci-Fi nd 1st ACE printing Book Two of the Green Lion Trilogy.
54220 -4 Mordred John Eric Holmes Sci-Fi 2980 1st ACE printing and PBO The "authorized" sequel to the Armageddon 2419 A. D. Developed from an outline by Larry Niven and Jerry Pournelle. John Eric Holmes also did some "authorized" sequel work to Edgar Rice Burroughs tales.
54231 Morgan's Castle Jan Hilliard
(aka: Hilda Kay Grant)		 ACE Gothic Novel nd c.1964; nd; 2nd ACE printing Morgan's Castle was originally published as ACE K-203 (1964).
54235 Mountain of Fear Rona Rondall
(aka: Rona Shambrook)		 ACE Gothic Novel 1971 1st ACE printing Original title: Silent Thunder
54236 Mountain of Fear Rona Rondall
(aka: Rona Shambrook)		 ACE Gothic Novel nd .1971; nd; 2nd ACE printing Same cover art - but used in mirror image of ACE 54325
54332 -4 Leo: Total Horoscope, 1980 Anonymos Horoscope 1979 Note: this volume is seriously out of sequence with the ACE Letter-Number series ordering.
54378 Moura Viginia Coffman ACE Gothic Novel nd c.1959; 1963; nd Robert Maguire Moura was originally published as ACE K-175 (1963).
54379 -3 Moura Viginia Coffman ACE Gothic Novel nd c.1959; 1963; nd
54380 Moura Viginia Coffman ACE Gothic Novel nd c.1959; 1963; nd Lou Marchetti
54381 -2 Montana Rides! Max Brand
(aka: Frederick Faust)		 Western 1981 ACE Charter edition The original author notation for this volume was as by Evan Evans (yet another pseudonym).
54460 The Mucker Edgar Rice Burrough Western 1974 1st ACE printing Frank Frazetta
54460 The Mucker Edgar Rice Burroughs Sci-Fi 1974 1st ACE printing Frank Frazetta
54462 The Mucker Edgar Rice Burroughs Sci-Fi nd c.1914; 1974; nd Frank Frazetta I have no idea where this fits into E.R.B.'s conceptional universe - if you do, let me know - I could not get pass the first 30 pages.
54476 -2 Brother Death Steve Perry Sci-Fi 1992 1st ACE printing Luis Royo A Matador novel - thus this title has some other aspect to allow it to be placed in this ACE Letter-Number series.
54484 -3 Mulengro: A Romany Tale Charles De Lint Sci-Fi 1985
54500 -9 Multiface Mark Adlard Sci-Fi 1978 1st ACE printing Paul Alexander
54540 -8 Murder and Magic Randall Garrett Sci-Fi 1979 1st ACE printing Bob Adragna Four linked short stories: The Eyes Have It, A Case of Identity, The Muddle of the Woad, and A Stretch of the Imagination. These volumes all use the same cover art by Bob Adragna.
54541 -6 Murder and Magic Randall Garrett Sci-Fi 1981 c.1979; 1981; 2nd ACE printing Bob Adragna
54542 -4 Murder and Magic Randall Garrett Sci-Fi 1982 c.1979; 1981; 1982; 3rd ACE printing Bob Adragna
54551 -6 Murder and Magic Randall Garrett Sci-Fi nd Bob Adragna This volume actually was never printed.  This was a pre-publication cover for the second printing that had the wrong ACE Letter-Number on the cover and spine (54551-6); it was sent to booksellers for ordering only [without a book attached].
54560 Murder Scholastic Janet Caird Mystery 1969
54710 -9 The Murder League Robert L. Fish Mystery nd c.1968; nd
54725 -7 Music in the Hills D. E. Stevenson ACE Romance nd
55120 My Brother John Herbert R. Purdum Western c.1966; nd; probably 2nd ACE printing
55123 -8 My Brother John Herbert R. Purdum Western c.1966; nd; probably 3rd ACE printing My Brother John was originally published as ACE G-685 (1966). This story was a "Spur Award" winner for "Best Western Novel."
55132 -7 My Brother's Keeper  Charles Sheffield Sci-Fi 1982 1st ACE printing
55133 -5 My Brother's Keeper Giles A. Lutz Western c.1975; nd; ACE Charter edition George Gross Note this volume uses the same G. Gross cover art, but has a "Spur Award winning author of The Honyocker" banner overlain on the cover art.
55134 -3 My Brother's Keeper  Charles Sheffield Sci-Fi 1986 c.1982; 1986; 2nd ACE printing
55140 My Brother's Keeper Giles A. Lutz Western 1975 1st ACE printing George Gross
55150 My Father's House Meyer Levin Historical Fiction 1969
55270 My Sister Erica Jane Blackmore ACE Gothic Novel 1975 1st ACE printing
55276 -5 Myth-ing Persons Robert Asprin ACE Fantasy nd Walter Velez
55279 -X Myth-Nomers and Im-Pervections Robert Asprin ACE Fantasy 1988 1st ACE printing Walter Velez
55282 -X M.Y.T.H. Inc. In Action Robert Asprin ACE Fantasy 1991 Walter Velez
55519 -5 Myth Conceptions Robert Asprin ACE Fantasy 1985 1st ACE printing Walter Velez
55529 -2 Myth Directions Robert Asprin ACE Fantasy nd 9th ACE printing Walter Velez
56010 -5 Naked To The Stars Gordon R. Dickson Sci-Fi 1980 1st ACE printing Enric
56011 Naked To The Stars Gordon R. Dickson Sci-Fi nd c. 1980; nd Enric
56020 -2 The Name Is Hart Frank Roderus Western c.1976; nd
56025 -3 The Nameless Breed Will C. Brown Western c.1960; 1977; 1985
56026 The Nameless Breed Will C. Brown Western c.1960; 1977; nd
56027 -X The Nameless Breed Will C. Brown Western c.1960; 1977; nd; ACE Charter edition The Nameless Breed was a "Spur Award" winner for "Best Western Novel."
56400 -3 Storm of Dust Neil Randall Sci-Fi 1987 1st thus This is a novel based upon David Drake's series - Dragon Lord. Listed as "A Crossroads Adventure" that suggests other in this series (which I have not seen yet).
Note this volume is out of sequence with respect to the ACE Letter-Number series.
56566 -2 The Nautilus Sanction Simon Hawke Sci-Fi 1985 A "Time Wars" novel, listed as 5th in the series.
56575 -1 The Navigator of Rhada Robert Cham Gilman
(aka: Alfred Coppel)		 Sci-Fi 196 1st ACE printing
56797 -5 Nebula Award Stories 17 Joe Haldeman (Ed.) Sci-Fi 1985 c.1983; 1985; 1st ACE printing Jeffrey Ridge Originally published by Holt, Rinehart & Winston (1983; hardcover). Stories include an Introduction (Joe Haldeman); 1981 and Counting (essay by Algis Budrys); Venice Drowned (Kim Stanley Robinson); The Quiet (George Guthridge -as by George Florance-Guthridge); Going Under (Jack Dann); Johnny Mnemonic (William Gibson); Films and Television—1981 (essay by Baird Searles); Zeke (Tim Sullivan - as by Timothy Robert Sullivan); The Saturn Game (Poul Anderson); Disciples (Gardner Dozois); The Quickening (Michael Bishop); The Pusher (John Varley); The Claw of the Conciliator (Excerpt) (Gene Wolfe); Meeting Place (poem by Ken Duffin); On Science Fiction (poem by Thomas M. Disch); and Appendices (Nebula Award Stories Seventeen).
56851 -3 Necromancer Gordon R. Dickson Sci-Fi 1981 1st ACE printing Stephen Hickman
56852 -1 Necromancer Gordon R. Dickson Sci-Fi 1982 c.1981; 1982; 2nd ACE printing Stephen Hickman
56853 -X Necromancer Nine Sherri S. Tepper ACE Fantasy 1983 1st ACE printing and PBO James Christensen Book 2 of the True Game series.
Number series 56852-1 whereas the spine and cover have 56853-X.  Hmmm, it appears that in the production of this volume, the promotional cover had the 56852-1 numbering, but it was found that that number had already been used for the 2nd printing of Gordon R. Dickson's Necromancer (see above).  This was fixed (kind of) for the actual published edition of Tepper's Necromancer Nine, but only for the front cover and spine.
Listed as sequel to King's Blood Four.  It appears (thank you Bill) that this volume is a bit of challenge.  If you look at the cover art image (wraparound) you will note that the ISBN block on the back has the ACE Letter-
The barcode block, now filled in, ended up with the ISBN of the Dickson printing. Only at ACE Books 
56856 -4 Necromancer Gordon R. Dickson Sci-Fi 1987 c.1981; 1982; 1987; 5th ACE printing Stephen Hickman
56857 -2 Necromancer Nine Sherri S. Tepper ACE Fantasy nd c.1983; nd; 3rd ACE printing James Christensen
56872 -6 Needle in a TIme Stack Robert Silverberg Sci-Fi 1985 c.1966; 1985; 1st ACE printing Don Dixon
56920 Nemesis of Circle A Giles A. Lutz Western c.1965; nd Nemesis of Circle A was originally published under Reese Sullivan (aka Giles A. Lutz) in ACE Double M-128 (1965) bound with Brian Wynne (aka Brian Garfield) The Night It Rained Bullets. It was later republished as ACE Double 57601 (nd).
56940 The Nemesis From Terra Leigh Brackett Sci-Fi 1976 c.1961; 1976; 2nd ACE printing Carlos Ochagavia The Nemesis From Terra was originally published in ACE Double F-123 (1961) bound with Robert Silverberg's Collision Course.
Leigh Douglas Brackett (b. 1915; d. 1978) was one of the earliest of the women science fiction (and fantasy) writers. Her first published science fiction story, Martian Quest, appeared in Astounding in 1940. She was a prolific writer in the genres of science fiction (her most recognized story is probably The Long Tomorrow, c. 1955 - ACE F-135), mystery, and western as well as television and movie scripts ("The Big Sleep" - 1946 and "Rio Bravo" - 1958).
56941 -2 The Net Loren J. Macgregor Sci-Fi 1987 1st ACE printing and PBO This is one of the "New ACE Science Fiction Special Editions" edited by Terry Carr.
56956 -0 Neuromancer William Gibson Sci-Fi 1984 1st ACE printing and PBO James Warhola This is one of the "New ACE Science Fiction Special Editions" edited by Terry Carr. Probably the starting point of the cyberpunk movement, but his second book, Count Zero, is much better (in my opinion).  Actually, I still think the precursor for the cyberpunk movement is Brunner's Shockwave Rider. - Dr. Smith
Note: a pre-publication cover used different colors for the graphics.
56957 -9 Neuromancer William Gibson Sci-Fi 1984 c.1984; 2nd ACE printing James Warhola
56958 -7 Neuromancer William Gibson Sci-Fi 1985 c.1984; 3rd ACE printing James Warhola Note: the graphics colours are different in this edition.
56958 -7 Neuromancer William Gibson Sci-Fi 1985 c.1984; 1985; 4th ACE printing James Warhola
56958 -7 Neuromancer William Gibson Sci-Fi 1986 c.1984; 1985; 1986; 5th ACE printing The 4th and 5th printings have the same ACE Letter-Number series as the 3rd printing but with new cover art by Richard Berry.
56959 -5 Neuromancer William Gibson Sci-Fi 1986 c.1984; 1985; 1986; 7th ACE printing Note the awards won: Hugo, Nebula, and Philip K. Dick.
If you are wondering where the 6th ACE printing is found  (thank you Bill), you are not alone.  The printing history for the 7th ACE printing does not have a 6th printing listed.  Argh - oh ACE Books, just when you thought you had seen everything, something new arises.
And, yet another ACE wonder.  ACE 56959-5 reprinted with a new cover (and price). So, 8th edition?  Working on this.
56973 -0 Never The Twain Kirk Mitchell Sci-Fi 1987 1st ACE printing and PBO
57100 The New Adventures of the Nurses Nancy Wood ACE Nurse Romance 1973 1st ACE printing
57101 -8 New Barbarians Kirk Mitchell Sci-Fi 1986 Sequel to Procurator.
57161 New Lands Charles Fort Paranormal nd c. 1968; nd New Lands was originally published as ACE H-74 (1968).
57205 New Nurse at Dorn Memorial Adeline McElfresh ACE Nurse Romance 1969 1st ACE printing
57250 New World or No World Frank Herbert (Ed.) Non-fiction nd 1st ACE printing Forward by Senator Edmund S. Muskie and Preface by Walter J. Hickel (Secretary of the Interior). This appears to be the written summary of an "Earth Week" documentary on Ecology analyzed during interviews and commentary on the"Today Show" on NBC television.
57270 New Worlds of Fantasy Terry Carr (Ed.) Sci-Fi nd
57271 New Worlds of Fantasy #2 Terry Carr (Ed.) Sci-Fi 1970 1st thus Kelly Freas Interior art (one small drawing per story) by Kelly Freas
Contains: Robert Sheckley The Petrified World, Keith Roberts The Scarlet Lady, Avram Davidson They Loved Me in Utica, Jorge Luis Borges The Library of Babel, B. J. Bayley The Ship of Disasters, Joanna Russ Window Dressing, Harry Harrison By the Falls, Kris Neville The Night of the Nickel Beer, David Redd A Quiet Kind of Madness, Roger Zelazny A Museum Piece, Terry Carr Introduction and The Old Man of the Mountains, Britt Schweitzer En Passant, Wilmar H. Shiras Backward, Turn Backward, Thomas M. Disch His Own Kind, Katherine MacLean Perchance to Dream, Leonid Andreyeff Lazarus, R. A. Lafferty The Ugly Sea, and Robert Bloch The Movie People.
57272 New Worlds of Fantasy #3 Terry Carr (Ed.) Sci-Fi 1971 1st thus Kenneth Smith Interior art (one drawing per story) by Alicia Austin
Contains: Terry Carr Introduction and Sleeping Beauty, Peter S. Beagle Farrell and Lila the Werewolf, R. A. Lafferty Adam Had Three Brothers, Avram Davidson Big Sam, Edgar Pangborn Longtooth, Fritz Leiber The Inner Circles, Victor Contoski Von Goom's Gambit, Zenna Henderson Through a Glass - Darkly, Roger Zelazny The Stainless Steel Leech, Robert Bloch The Plot is the Thing, Jorge Luis Borges Funes the Memorious, J. G. Ballard Say Goodbye to the Wind, and William M. Lee A Message From Charity.
57282 -0 The Cyclops Conspiracy Nick Carter
(house pseudonym for Jack Canon)		 Spy Thriller 1986 1st ACE printing - Charter imprint Killmaster #213
57286 -3 The Death Orbit Nick Carter
(house pseudonym for David Hagberg)		 Spy Thriller 1986 1st ACE printing - Charter imprint Killmaster #217
57287 -1 Slaughter Day Nick Carter
(house pseudonym for Jack Canon)		 Spy Thriller 1986 1st ACE printing - Charter imprint Killmaster #218
57290 -1 Crossfire Red Nick Carter Spy Thriller 1987 1st ACE printing - Charter imprint Killmaster #221
57291 -X Blood of the Falcon Nick Carter Spy Thriller 1987 1st ACE printing - Charter imprint George Gross Killmaster #222
57293 -6 The Terror Code Nick Carter
(house pseudonym for Jack Canon)		 Spy Thriller 1987 1st ACE printing - Charter imprint Killmaster #224
57295 -2 Blood Raid Nick Carter Spy Thriller 1987 1st ACE printing - Charter imprint Killmaster #226
57305 New Yorker Nurse Dorothy Fletcher ACE Nurse Romance 1969 1st ACE printing
57306 New Yorker Nurse Dorothy Fletcher ACE Nurse Romance 1972 c.1969; 1972; 2nd ACE printing Different cover art from ACE 57305.
57420 Next Stop The Stars Robert Silverberg Sci-Fi 1977 c.1962; 1977; Don Ivan Punchatz Next Stop The Stars was originally published in ACE Double F-145 (1962) bound with The Seed of Earth. This edition has a new introduction (c. 1977) by the author.
57446 -7 The Nightingale Kara Dalkey ACE fantasy 1991 1st thus
57450 -5 The Night Face Poul Anderson Sci-Fi 1978 c.1963; 1978; 2nd ACE printing Michael Whelan Original title: Let the Spacemen Beware!
Let the Spacemen Beware! was originally published in ACE Double F-109 (1963) bound with Kenneth Bulmer's The Wizard of the Starship Poseidon.
Includes an Introduction by Poul Anderson and an Afterword by Sandra Miesel.
57451 -3 The Night Face Poul Anderson Sci-Fi 1979 c.1963; 1978; 1979; 3rd ACE printing Michael Whelan This ACE Letter-Number edition was later reprinted (with same cover art and price) in November 1981.
57457 -2 Bone Dance Emma Bull Urban fantasy 1991 1st ACE printing and PBO Jean Targete Yes, this title is Seriously out of sequence with the ACE  Letter-Number series, but I did check several different ways and this is the 5-digit number code assigned (argh).
57473 -4 Night of the Cooters Howard Waldrop Sci-Fi c.1990; 1991; July 1993; 1st ACE printing Don Ivan Punchatz
57496 -3 The Night of the Avenger Nick Carter Spy Thriller 1975 1st ACE printing - Charter imprint
57502 -1 Night of the Warheads Nick Carter
(house pseudonym for Jack Canon)		 Spy Thriller 1984 1st ACE printing - Charter imprint George Gross Killmaster #189
57554 Night of the Bonfire Jane Blackmore ACE Gothic Novel 1974 1st ACE printing
57570 Night's Evil Mark Mcshane Mystery nd 1st ACE printing
57613 -3 Nightrider David Mace Sci-Fi
57701 The Night My Enemy Anne Maybury
(aka: Anne Buxton)		 ACE Romance nd c.1962; 1966; nd Note: this volume does not have an ACE logo, just the five digit ACE Letter-Number and the price.
57703 -2 The Night My Enemy Anne Maybury
(aka: Anne Buxton)		 ACE Romance nd c.1962; 1966; nd The Night My Enemy was originally published as ACE K-263 (c. 1962; 1966). This is also one of the "Adult Romances for the Modern Woman" series. 
57725 The Nightmare Ends Frances Cowen ACE Gothic Novel 1970 For this volume, the cover has Frances Cowan rather than Frances Cowen.
57730 Nightmare Ranch Don P. Jenison Western 1974 1st ACE printing and possibly PBO
57731 -8 Nightmare Ranch Don P. Jenison Western c.1974; nd; possibly 2nd ACE printing
57751 Night of Masks Andre Norton Sci-Fi 1969 c.1965; 1969; ; 2nd ACE printing Gray Morrow listed as "Complete & Unabridged"
Night of Masks was originally published as ACE F-365 (December 1965).
Note the re-use of old/new stock for this edition.
57752 Night of Masks Andre Norton Sci-Fi 1973 c.1965; 1969; 1973; 3rd ACE printing JW
57753 Night of Masks Andre Norton Sci-Fi nd c.1965; 1969; 1973; nd; 4th ACE printing JW
57800 The Night of the Letter Dorothy Eden
(aka: Dorothy Enid Eden)		 ACE Gothic Mystery nd c.1955; 1967; nd; 2nd ACE printing Original title: Darling Clementine
Interior illustration by Jack Gaughan
The Night of the Letter was originally published as ACE K-261 (1967)
Note:  this edition has the white block with the five digit ACE Letter-Number series.  Thus, this could be the reuse of old stock and makes this the 2nd ACE printing.
57802 The Night of the Letter Dorothy Eden
(aka: Dorothy Enid Eden)		 ACE Gothic Mystery nd c.1955; 1967; nd; ACE Star edition
57803 -7 The Night of the Letter Dorothy Eden
(aka: Dorothy Enid Eden)		 ACE Gothic Mystery nd .1955; 1967; nd
57804 The Night of the Letter Dorothy Eden
(aka: Dorothy Enid Eden)		 ACE Gothic Mystery nd .1955; 1967; nd
57805 -5 The Night of the Letter Dorothy Eden
(aka: Dorothy Enid Eden)		 ACE Gothic Mystery
57852 -7 Night of the Stranger Jane Blackmore ACE Gothic Novel 1973 c.1961; 1967; 1973; 2nd ACE printing Night of the Stranger was originally published as ACE K-289 (1967).
57892 -6 Night Trains Peter Heath Fine Sci-Fi 1981 1st ACE printing ACE Charter edition
57901 The Night of the Visitor Ruth Willock ACE Gothic Novel nd c.1965; nd; 2nd ACE printing The Night of the Visitor was originally published as ACE K-205 (1965).
57925 -3 Maori Alan Dean Foster 1988 1st ACE printing
57975 Nightingale at Noon Margaret Summerton ACE Gothic Novel nd c.1962; 1967; nd; 2nd ACE printing Nightingale at Noon was originally published as ACE K-194 (1967).
58000 Nightmare in Dublin Philip Loraine
(aka: Robin Estridge)		 Mystery nd c.1952; nd Original title: The Dublin Nightmare ~~ ACE Star edition
58014 Nightmare House Ethel Bowyer Martin ACE Gothic Novel 1975 1st ACE printing
58024 -6 The Nightmare Of God Mark E. Rogers ACE fantasy 1988 1st ACE printing and PBO Luis Royo sequel to Zorachus
58050 Nine Hundred Grandmothers R. A. Lafferty Sci-Fi 1970 1st ACE printing Leo and Diane Dillon Short story collection and one of the ACE Science Fiction Specials.
58051 -3 Nine Hundred Grandmothers R. A. Lafferty Sci-Fi 1982 c.1970; 1982; 2nd ACE printing Charles Mikolaycak
58085 -8 Night-Threads: Book One: The Calling of the Three Ru Emerson ACE fantasy 1990 1st ACE printing and PBO Larry Elmore
58086 -6 Night-Threads: Book Two: The Two in Hiding Ru Emerson ACE fantasy 1991 1st ACE printing Larry Elmore
58087 -4 Night-Threads: Book Three: One Land, One Duke Ru Emerson ACE fantasy 1992 1st ACE printing and PBO Larry Elmore
58088 -2 Night-Threads: The Craft of Light Ru Emerson ACE fantasy 1993 1st ACE printing
58103 -X Ninety Trillon Fausts Jack L. Chalker Sci-Fi 1992 c.1991; 1992; 1st ACE mass market printing Darrell K. Sweet
58105 -6 The 97th Step Steve Perry Sci-Fi 1989 1st ACE printing Luis Royo
58116 -1 The Nitrogen Fix Hal Clement Sci-Fi 1980 1st ACE trade paperback edition David Mattingly Interior illustrations by Janet Aulisio
58117 -X The Nitrogen Fix Hal Clement Sci-Fi 1981 c.1980; 1981; "First Mass Market Edition" David Mattingly Interior illustrations by Janet Aulisio
58118 -8 The Nitrogen Fix Hal Clement Sci-Fi 1982 c.1980; 1981; 1982;  David Mattingly Interior illustrations by Janet Aulisio
58250 Noah II Roger Dixon Sci-Fi 1970 Jack Gaughan Listed as "original story idea by Basil Bova and Roger Dixon." Cover blurb indicates that this story is "Soon to be a major motion picture." Hmmmm - never saw it.
58251 Noah II Roger Dixon Sci-Fi 1975 c.1970; 1975 R. DeAnda
58252 Noah II Roger Dixon Sci-Fi nd c.1970; 1975; nd R. DeAnda
58328 -8 No Doors, No Windows Harlan Ellison Sci-Fi 1983 1st ACE printing Barclay Shaw Short story (16) collection with a photograph of a young Harlan Ellison on back cover.
58335 -9 No Hint of Scandal Shelia Bishop ACE Regency Romance 1971 ACE Star edition
58375 The No-Gun Fighter Nelson Nye Western c.1956; nd
58376 The No-Gun Fighter Nelson Nye Western c.1956; nd The No-Gun Fighter was originally published in ACE Double D-180 (1956) bound with Walt Coburn's One Step Ahead of the Posse.
58417 -9 Hawk & Fisher Simon Green ACE fantasy Louis Royo Simon Green is also the author of the "Nightside" fantasy series. Note that this volume is seriously out of sequence for the ACE Letter-Number series (argh - wish they would follow the rules - must be some series title that starts with an "N" maybe?).
Update - 13 February 2021.  The book was released in the UK by Headline [a month before the Ace edition] and the title was “No Haven for the Guilty” - so perhaps the ACE Letter-Number series was assigned before the title change ….. (thank you Bill for this information).
58602 No Man's Brand William Vance Western c.1967; nd
58603 -1 No Man's Brand William Vance Western c.1967; nd
58604 -X No Man's Brand William Vance Western c.1967; nd No Man's Brand was originally published in ACE Double G-674 (1967) bound with Merle Constiner's Two Pistols South of Deadwood. It was later reprinted as ACE Double 58601.
58612 -0 The Normandy Code Nick Carter
(house pseudonym for Jack Canon)		 Spy Thriller 1985 1st ACE printing - Charter imprint Killmaster #202
58613 -9 Northwest Smith C. L. Moore Sci-Fi 1982 1st ACE printing Jim Burns Collects all of the Northwest Smith "Martian" stories from the pulps. Originally printed in hardcover under the title "Scarlet Dream"(1981). There are three reprints with the same ACE Letter-Number series, the 4th printing in December 1985.  All use the same Jim Burns cover art.
58614 -7 Northwest Smith C. L. Moore Sci-Fi 1986 c.1982; 1986; 5th ACE printing Jim Burns
58615 -5 Northworld Vengeance David Drake Sci-Fi 1991 1st ACE printing and PBO Roger Loveless
58616 -3 Northworld Justice David Drake Sci-Fi 1992 1st ACE printing and PBO Roger Loveless
58632 Norby and The Oldest Dragon Janet Asimov
and Isaac Asimov		 Sci-Fi 1993 c.1990; 1993; 1st ACE printing David Dorman
58633 -3 The Norby Chronicles Janet Asimov
and Isaac Asimov		 Sci-Fi 1986 Barclay Shaw The Norby Chronicles contains Norby the Mixed-Up Robot and Norby's Other Secret.
58635 -X Norby: Robot For Hire Janet Asimov
and Isaac Asimov		 Sci-Fi 1987 1st ACE printing
58637 -6 Norby Through Time and Space Janet Asimov
and Isaac Asimov		 Sci-Fi 1988 1st ACE printing
58638 -4 Norby and Yobo's Great Adventure Janet Asimov
and Isaac Asimov		 Sci-Fi 1991 1st ACE printing
58694 -5 Oracle Mike Resnick Sci-Fi 1992 1st ACE printing and PBO Keith Birdsong
58701 Prophecies on World Events by Nostradamus Stewart Robb Paranormal 1972 c.1968; 1972; 2nd ACE printing Prophecies on World Events by Nostradamus was originally published as ACE H-99 (1968). Stewart Robb is listed as translator and intergrator (interesting title).
58810 Not Grass Alone Nelson Nye Western nd listed as "First Paperback Publication"
58866 -2 Norwegian Typhoon Nick Carter
(house pseudonym for Robert E. Vardeman)		 Spy Thriller 1982 1st ACE printing - Charter imprint George Gross Robert E. Vardeman also writes in the fantasy and science fiction genres.
58875 Notes From The New Underground Jess Kornbluth 1968 1st ACE printing An anthology of essays from underground newspapers pre-1968. Diggers, hippies, mutants, love, Haight Ashbury, the Beatles, & much more. Essays by Burroughs, Ginsberg, Kupferberg, Leary, Watts, Paul Goodman, and McCartney.
59301 -1 No. 9 Belmont Square Margaret Erskine
(aka: Margaret Weherby Williams)		 ACE Gothic Mystery nd c.1963; 1967 Original title: The House in Belmont Square
No. 9 Belmont Square was originally published as ACE K-281 (1967), but published in hardback by Doubleday in 1963.  An "Inspector Finch Gothic Mystery."
59310 -2 No. 9 Belmont Square Margaret Erskine
(aka: Margaret Weherby Williams)		 ACE Gothic Mystery nd c.1963; 1967
59325 Nurse Anne Adeline McElfresh ACE Nurse Romance nd c.1971; nd; might be 1st thus
59390 -5 Nurse Marcie's Island Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1964; nd; 2nd ACE printing Nurse Marcie's Island was originally published as ACE D-585 (1964).  Headlined as “An Arlene Hale Nurse Romance.”
59401 Nurse at Moorcroft Manor Sharon Heath ACE Nurse Romance nd c.1967; nd; 2nd ACE printing Nurse at Moorcroft Manor was originally published as ACE M-161 (1967).
59410 Nurse Nicole's Decision Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1965; nd Headlined as “An Arlene Hale Nurse Romance.”
59425 Nurse at Cliff End Sharon Heath ACE Nurse Romance nd
59451 Nurse at Mystery Villa Willo Davis Roberts ACE Nurse Romance 1973 c.1967; 1968; September 1973; 2nd ACE printing
59457 Nurse in Danger Willo Davis Roberts ACE Nurse Romance 1972 1st ACE printing
59461 Nurse Karen's Secret Teresa Holloway ACE Nurse Romance nd Headlined as “A Teresa Holloway Nurse Romance."
59501 Nurse at Shadow Manor Sharon Heath ACE Nurse Romance nd c.1966; nd; 2nd ACE printing Nurse at Shadow Manor was originally published as ACE F-381 (1966).
59533 The Nurse From Mulberry Square Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance 1972 Headlined as “An Arlene Hale Nurse Romance."
Another copy - listed as "ACE Nurse Romance Series" and using the same ACE 59533 Letter-Number code with different cover art in a format similar to that of ACE 59535. This suggests that this edition may be around 1970.
59534 Nurse Jean's Strange Case Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1970; nd; 2nd ACE printing Headlined as “An Arlene Hale Nurse Romance."
59535 Nurse Jean's Strange Case Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance 1970 1st ACE printing Note this ACE Nurse Romance series is in the "Read Easy/Large Type" format. Hmmm..... does that suggest its audience is a bit older?
59537 Nurse Elaine and the Sapphire Star Sharon Heath ACE Nurse Romance 1973
59551 -2 Nurse Kay's Conquest Willo Davis Roberts ACE Nurse Romance nd 2nd ACE printing
59676 The Nurse on Dark Island Teresa Holloway ACE Nurse Romance 1972 1st thus
59751 Nurse on the Beach Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd .1967; nd; 2nd ACE printing Nurse on the Beach was originally published as ACE F-430 (1967).  Headlined as “an Arlene Hale Nurse Romance."
59760 -2 A Nurse's New Love Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1965; nd; 2nd ACE printing Original title: Chicago Nurse
A Nurse's New Love was originally published as ACE F-368 (1965).
59776 Nurse on the Run Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1965; nd; 2nd ACE printing Original cover art for Nurse on the Run. Image area is 12.75" x 11.25 " on artist board. In gouache. No signature on front or verso
59777 Nurse on the Run Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd c.1965; nd; 3rd ACE printing Headlined as “An Arlene Hale Nurse Romance."
59790 Nurse From the Shadows Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance 1975 listed as “first paperback publication”
Headlined as “An Arlene Hale Nurse Romance."
59825 Nurse to Remember Teresa Holloway ACE Nurse Romance nd Nurse to Remember reuses the same cover art from Arlene Hale's Nurse on the Beach (ACE 59751).
59860 A Nurse's Strange Romance Arlene Hale
(aka: Mary Arlene Hale)		 ACE Nurse Romance nd Headlined as “An Arlene Hale Nurse Romance."
59960 -5 Nurse Transplanted Teresa Holloway ACE Nurse Romance 1971 1st ACE printing and PBO Original cover art by Martin Koeing for Nurse Transplanted. Gouache on board. 19.25" x 16.25." Not signed. Verso has title, ACE Letter-Number series, and artist name.
59961 Nurse Karen’s Secrets Teresa Holloway ACE Nurse Romance nd Original title: Nurse Transplanted
Headlined as “A Teresa Holloway Nurse Romance."