50502 KATHERINE WIGMORE EYRE The Lute and the Glove (c.1962; nd; 2nd ACE printing; ACE Gothic Novel)
50503-1 KATHERINE WIGMORE EYRE Mistress of Fear (original title: The Lute and the Glove; 1962; nd; ACE Gothic Novel)
51200 MIRIAM ALLEN deFORD The Real Ma Barker (nd; 1st ACE printing; non-fiction)
51500 ANONYMOUS Madame Solario (c.1956; nd)
51550 ADELINE McELFRESH The Magic Of Dr. Farrar (1965; 1st ACE printing; ACE Nurse Romance Series)
51625-4 RACHEL COSGROVE PAYES Malverne Hall (c.1970; nd; ACE Gothic Novel)
51626 RACHEL COSGROVE PAYES Malverne Hall (1970; ACE Gothic Novel)
51645-9 KATHLEEN A. SHOESMITH Mallory's Luck (c.1971; January 1974;1st ACE printing; ACE Gothic Novel)
51841 JOY PACKER The Man in the Mews (c.1964; 1966; nd; 2nd ACE printing; ACE Gothic Novel)
51903 LOIS PAXTON (aka LOIS DOROTHEA LOW) The Man Who Died Twice (cover by Elaine Duillo - signed as Elaine; nd; ACE Gothic Mystery)
51938 BRUCE CASSIDAY Marcus Welby MD: Rock A Cradle Empty (1970; 1st ACE printing and PBO; photo cover and rear cover photo inset)
51939 BRUCE CASSIDAY Marcus Welby MD #2: The Acid Test (1970; 1st ACE printing and PBO; photo cover and rear cover photo inset)
51941 BRUCE CASSIDAY Marcus Welby MD #3: The Fire's Center (1971; 1st ACE printing and PBO; photo cover)
51965-2 ALLEN DRURY Mark Coffin, U. S. S. (c.1979; June 1980; 1st ACE printing)
52090 EVA ZUMWALT (aka JOHN JACOB NILES) Masquerade of Evil (original title: Black is the Color (December 1975; 1st ACE printing; ACE Gothic Novel)
52091-X EVA ZUMWALT (aka JOHN JACOB NILES) Masquerade of Evil (original title: Black is the Color (c.1975; nd; copyright by G. Schirmer, Inc.) and DIANE LAPOINT Flames Over The Castle (c.1975; nd; ACE Gothic Novel)
52091-X (back cover)
52100 VIRGINIA COFFMAN Masque By Gaslight (1970; 1st thus; ACE Gothic Mystery)
52101 VIRGINIA COFFMAN Masque By Gaslight (nd; ACE Gothic Mystery)
52102-9 NATASHA PETERS The Masquers (1978; 1st ACE printing; ACE Romance Novel)
52110 JENNIFER SILLS Massage Parlor (1973; 1st ACE printing; photo cover)
52121 ROHAN O'GRADY (aka JUNE O'GRADY SKINNER) The Master of Montrolfe Hall (original title: Pippin's Journal; c.1967; nd; ACE Gothic Novel)
52122 ROHAN O'GRADY (aka JUNE O'GRADY SKINNER) The Master of Montrolfe Hall (original title: Pippin's Journal; c.1967; nd; ACE Gothic Novel)
52161 EDWINA MARLOW (aka T. E. HUFF) The Master of Phoenix Hall (c.1968; 1972; 2nd ACE printing; ACE Gothic Novel)
52276-9 NICK CARTER The Mayan Connection: Killmaster #194 (1984; 1st ACE Charter printing)
52340 ESTELLE THOMPSON The Meadows of Tallon (August 1974; 1st ACE printing; ACE Gothic Novel)
52410 RAY DORIEN Meet Nurse Lucinda (1969; 1st ACE printing; ACE Nurse Romance series)
52431 MARGARET SUMMERTON A Memory of Darkness (c.1967; 1973;2nd ACE printing; ACE Gothic Novel)
52435 MARC LOVELL (aka MARK McSHANE) Memory of Megan (original title: The Ghost of Megan; nd; ACE Gothic Novel)
52437-0 MARC LOVELL (aka MARK McSHANE) Memory of Megan (original title: The Ghost of Megan; nd; ACE Gothic Novel)
52995 RONA RANDALL (aka RONA SHAMBROOK) The Midnight Walker (cover by Jerome Podwil; June 1973; 1st ACE printing; ACE Gothic Novel)
53485-6 JANE BLACKMORE The Missing Hour (nd; ACE Gothic Novel)
53486-7 JANE BLACKMORE The Missing Hour (nd; ACE Gothic Novel)
53487-2 JANE BLACKMORE The Missing Hour (nd; ACE Gothic Novel)
53560 JOHN MARSH Monk's Hollow (c.1968; nd ACE Gothic Novel)
53561 JOHN MARSH Monk's Hollow (c.1968; June 1973; 2nd ACE printing; ACE Gothic Novel)
54000 LESLIE H. WHITTEN Moon of the Wolf (original title: Death of a Nurse; 1968; 1st ACE printing; ACE Gothic/Mystery)
54231 JAN HILLIARD (aka HILDA KAY GRANT) Morgan's Castle (c.1964; nd; 2nd ACE printing; ACE Gothic Novel)
54325 RONA RANDALL (aka RONA SHAMBROOK) Mountain Of Fear (original title: Silent Thunder; 1971; 1st ACE printing; ACE Gothic Novel)
54326 RONA RANDALL (aka RONA SHAMBROOK) Mountain Of Fear (original title: Silent Thunder; c.1971; nd; 2nd ACE printing; ACE Gothic Novel)
54332-4 anonymous Leo: Total Horoscope, 1980 (1979; horoscope)
54378 VIRGINIA COFFMAN Moura (cover by Robert Maguire; c.1959; 1963; nd; ACE Gothic Novel)
54379 VIRGINIA COFFMAN Moura (c.1959; 1963; nd; ACE Gothic Novel)
54380 VIRGINIA COFFMAN Moura (c.1959; 1963; nd; ACE Gothic Novel)
54542 ARLENE HALE (aka MARY ARLENE HALE) University Nurse (c.1967; nd; 2nd ACE printing; ACE Nurse Romance)
54560 JANE T CAIRD Murder Scholastic (1967; ACE Star edition; ACE Gothic Mystery)
55150 MEYER LEVIN My Father's House (1969; historical fiction)
55270 JANE BLACKMORE My Sister Erica (May 1975; 1st ACE printing; ACE Gothic Novel)
57161-2 CHARLES FORT New Lands (c.1968; nd; occult/paranormal)
57205 ADELINE McELFRESH New Nurse at Dorn Memorial (1969; ACE Nurse Romance series)
57250 FRANK HERBERT (ed.) New World or No World (nd; 1st ACE printing; non-fiction)
57305 DOROTHY FLETCHER New Yorker Nurse (1969; 1st ACE printing; ACE Nurse Romance Series)
57306-1 DOROTHY FLETCHER New Yorker Nurse (c.1969; nd (1972); 2nd ACE printing; ACE Nurse Romance)
57554-4 JANE BLACKMORE Night of the Bonfire (1974; 1st ACE printing; ACE Gothic Novel)
57701-5 ANNE MAYBURY (aka ANNE BUXTON) The Night My Enemy (c.1967; nd; ACE Gothic Novel)
57703-2 ANNE MAYBURY (aka ANNE BUXTON) The Night My Enemy (c.1967; nd; ACE Gothic Novel)
57725 FRANCES COWEN The Nightmare Ends (1970; ACE Gothic Novel)
57802 DOROTHY EDEN (aka DOROTHY ENID EDEN) The Night of the Letter (original title: Darling Clementine; c.1967; nd ACE Gothic Mystery)
57803-9 DOROTHY EDEN (aka DOROTHY ENID EDEN) The Night of the Letter (original title: Darling Clementine; c.1967; nd ACE Gothic Mystery)
57804 DOROTHY EDEN (aka DOROTHY ENID EDEN) The Night of the Letter (original title: Darling Clementine; c.1967; nd ACE Gothic Mystery)
57805-5 DOROTHY EDEN (aka DOROTHY ENID EDEN) The Night of the Letter (original title: Darling Clementine; c.1967; nd ACE Gothic Mystery)
57852-7 JANE BLACKMORE Night of the Stranger (cover by R. Hieinbothem; c.1961; 1967; 1973; 2nd ACE printing; ACE Gothic Novel)
57901 RUTH WILLOCK The Night of the Visitor (c.1965; nd; 2nd ACE printing; ACE Gothic Novel)
57925-3 ALAN DEAN FOSTER Maori (1988; 1st ACE printing)
57975 MARGARET SUMMERTON Nightingale at Noon (c.1962; 1967; nd, 2nd ACE printing; ACE Gothic Novel)
58014 ETHEL BOWYER MARTIN Nightmare House (June 1975; 1st ACE printing; ACE Gothic Novel)
58701-4 STEWART ROBB Prophecies on World Events by Nostradamus (c.1968; 1972; 2nd ACE printing; occult/paranormal)
58866-2 NICK CARTER (house pseudonym for ROBERT E. VARDEMAN) Norwegian Typhoon (1982; 1st ACE Charter printing)
58875 JESSE KORNBLUTH Notes From The New Underground (1968; 1st ACE printing)
59301-1 MARGARET ERSKINE (aka MARGARET WETHERBY WILLIAMS) No. 9 Belmont Square (original title: The House in Belmont Square; c.1967; nd; ACE Gothic Mystery)
59310-2 MARGARET ERSKINE (aka MARGARET WETHERBY WILLIAMS) No. 9 Belmont Square (original title: The House in Belmont Square; c.1967; nd; ACE Gothic Mystery)
59325 ADELINE McELFRESH Nurse Anne (c.1971; nd; might be 1st thus; ACE Nurse Romance Series)
59425 SHARON HEATH Heath Nurse at Cliff End (nd; ACE Nurse Romance Series)
59457 WILLO DAVIS ROBERTS Nurse in Danger (1972; 1st thus; ACE Nurse Romance Series)
59461 TERESA HOLLOWAY Nurse Karen's Secret (nd; headlined as a Teresa Holloway Nurse Romance"; ACE Nurse Romance Series)
59501 SHARON HEATH Nurse at Shadow Manor (c.1966; nd; 2nd ACE printing; ACE Nurse Romance Series)
59533 ARLENE HALE (aka MARY ARLENE HALE) The Nurse From Mulberry Square (1972; headlined as an Arlene Hale Nurse Romance")
59535 ARLENE HALE (aka MARY ARLENE HALE) Nurse Jean's Strange Case (1970; 1st ACE printing; ACE Nurse Romance Series)
59537 SHARON HEATH Heath Nurse Elaine and the Sapphire Star (1973; ACE Nurse Romance Series)
59676 TERESA HOLLOWAY The Nurse on Dark Island (1972; 1st thus; ACE Nurse Romance Series)
59751 ARLENE HALE (aka MARY ARLENE HALE) Nurse on the Beach (c.1967; nd; 2nd ACE printing; ACE Nurse Romance Series)
59760-2 ARLENE HALE (aka MARY ARLENE HALE) A Nurse's New Love (original title: Chicago Nurse; c.1965; nd; 2nd ACE printing; ACE Nurse Romance)
59777 ARLENE HALE (aka MARY ARLENE HALE) Nurse on the Run (original title: Chicago Nurse; c.1965; nd; headlined as an Arlene Hale Nurse Romance")
59790 ARLENE HALE (aka MARY ARLENE HALE) Nurse From the Shadows (1975; listed as first paperback publication and headlined as An Arlene Hale Nurse Romance)
59825 TERESA HOLLOWAY Nurse to Remember (nd; ACE Nurse Romance Series)