H-002 GEORGE RYLEY SCOTT Curious Customs of Sex and Marriage (c. 1962; 1st ACE printing; ACE Star edition; listed as "complete and unabridged"; non-fiction)
H-003 LOUIS PAUL Dara The Cypriot (1966; 1st thus; ACE Star edition; historical fiction)
H-004 OLIVE ECKERSON My Lord Essex (1966; 1st thus; ACE Star edition; historical fiction)
H-008 WILL CREED (aka WILLIAM LONG) The Sword of Il Grande (1966; 1st thus; historical fiction)
H-009 DuBOIS Captive of Rome (1966; historical fiction)
H-013 GARDNER SOULE The Mystery Monsters (1965; 1st ACE printing)
H-014 VINCENT GADDIS Invisible Horizons (1966; 1st thus; occult/paranormal)
H-016 HANS HOLZER Ghosts I've Met (1966; might be first paperback edition; occult/paranormal)
H-017 JACQUES VALLEE Anatomy Of A Phenomenon (1966; might be first paperback edition)
H-017 (back cover)
H-023 GEORGETTE HEYER Arabella
H-025 JAN TEMPEST (aka IRENE MAUDE SWATRIDGE) House of the Pines (cover by Lou Marchetti; c. 1946; nd; probable 1st thus; ACE Gothic Novel)
H-028 JACQUES VALLEE Flying Saucers
H-031 DOROTHY EDEN Sleep In The Woods (1960; cover by Shannon Stimweis; ACE Historical/Romance Novel)
H-032 HAL ELISON Games (1967; 1st thus; photo and graphic design cover)
H-037 CHARLOTTE HUNT (aka DORIS MARJORIE HODGES) The Gilded Sarcophagus (1967; 1st thus; ACE Gothic Novel)
H-047 HANS HOLZER Lively Ghosts of Ireland (1968; occult/paranormal)
H-50 JANE T CAIRD In A Glass Darkly (alternate title: Murder Reflected; 1968: ACE Gothic Novel)
H-053 LESLIE H. WHITTEN Progeny of the Adder (interior illustration by Jack Gaughan; c. 1965, 1968; first thus; listed as "complete and unabridged")
H-055 WILLY LEY On Earth and In The Sky (1968; 1st thus; non-fiction)
H-061 ELIZABETH SALTER Death in a Mist (c. 1957; 1968; 1st thus; ACE Gothic Mystery)
H-063 MIRIAM ALLEN deFORD The Real Bonnie & Clyde (1968; photographic images on cover and back; nonfiction)
H-063 (back cover)
H-064 BRINSLEY Le POER TRENCH The Flying Saucer Story (1st ACE printing; s'posed 1st U.S. publication; 1966)
H-068 RAYMOND BAYLESS The Enigma of the Poltergeist (1968; 1st thus; ACE Star edition)
H-069 RONA RANDALL (aka RONA SHAMBROOK) Knights Deep (1968; 1st thus; ACE Star edition; ACE Gothic Novel)
H-071 DOROTHY MACKIE LOW (aka LOIS DOROTHEA LOW) Isle For A Stranger (cover by Milton Lesser; c. 1962; 1968; 1st thus; ACE Gothic Novel)
H-074 CHARLES FORT New Lands (1968; occult/paranormal)
H-080 RONA RANDALL (aka MARGARET SUMMERTON) With Murder in Mind (1963; 1st thus: ACE Gothic Novel)
H-083 BERNHARDT J. HURWOOD Vampires, Werewolves, and Ghouls (1968; 1st thus; ACE Star edition)
H-088 CHARLES FORT Wild Talents (1968; ACE Star edition; occult/paranormal)
H-094 JOHN MACKLIN Dwellers in the Darkness (1968; occult/paranormal)
H-096 SHIRLEY JACKSON The Sundial (1958; interestingly listed as "copyright to author only"; ACE Gothic Novel)
H-098 CHARLOTTE HUNT (aka DORIS MARJORIE HODGES) The Cup of Thanatos (1968; 1st thus: ACE Gothic Novel)
H-099 STEWART ROBB (translated and interpreted by) Prophecies on World Events by Nostradamus (1968; occult/paranormal)
H-106 JANE T CAIRD Perturbing Spirit (1968; ACE Gothic/Horror)
H-108 JOHN MACKLIN Challenge to Reality (1968; occult/paranormal)