In addition to writing chiefly under his own name, Slesar published under several
pseudonyms, particularly on early short stories. These included: •
Clyde Mitchell – a
Ziff Davis "house pseudonym" used by some science fiction and fantasy authors in
Amazing Stories and
Fantastic, which were edited by
Paul W. Fairman. (Authors publishing as Clyde Mitchell include
Robert Silverberg,
Randall Garrett,
Harlan Ellison, and others.) Slesar used the Mitchell name for "The Monster Died at Dawn" in
Amazing Stories (November, 1956), and "A Kiss for the Conqueror" in
Fantastic (February, 1957). •
O. H. Leslie – Slesar chose this name, which he used from 1956 to 1964, again for Paul Fairman as well as other magazines. :: In
Amazing Stories he published such stories as "Marriages Are Made in Detroit" (December 1956), "Reluctant Genius" (January 1957), "No Room in Heaven" (June 1957), "The Anonymous Man" (July 1957), and "The Seven Eyes of Jonathan Dark" (January 1959). :: In
Fantastic he published such stories as "Death Rattle" (December 1956), "My Robot" (February 1957), "Abe Lincoln—Android" (April 1957), "The Marriage Machine" (July 1957), and "Inheritance" (August 1957). •
Ivar Jorgensen – This pseudonym, a house name, was also used by Robert Silverberg, Randall Garrett, Harlan Ellison,
Howard Browne, and Paul Fairman himself. Slesar's use of the name appeared in
Fantastic for "Coward's Death" (December 1956) and "Tailor-Made Killers" (August 1957). •
E. K. Jarvis – another Ziff Davis house name, also used by Robert Silverberg, Harlan Ellison, Paul W. Fairman,
Robert Bloch, and
Robert Moore Williams. Slesar used it for "Get Out of Our Skies!" in
Amazing Stories (December 1957). •
Lawrence Chandler – Another Ziff Davis house name, shared by Howard Browne, Slesar used it for "Tool of the Gods" in
Fantastic (November 1957). •
Sley Harson – Nearly an anagram of Slesar's name, he used it in collaboration with his friend Harlan Ellison. Together they published "Sob Story" in
The Deadly Streets (Ace Books, 1958). •
Gerald Vance – Another Ziff Davis house name; shared by
William P. McGivern,
Rog Phillips, Robert Silverberg and Randall Garrett. Slesar sold the story "The Lavender Talent" to Paul Fairman at
Fantastic (March 1958). •
Jeff Heller – A pen name he used when collaborating with his friend,
M*A*S*H writer Jay Folb. •
Eli Jerome - A pen name derived from the first names of his two brothers-in-law, the husbands of his sister Doris Greenberg and his sister Lillian Gleich. Used in stories in Alfred Hitchcock collections and 2 teleplays on
Alfred Hitchcock Presents ("Party Line" and "One Grave Too Many", both 1960). Other house names Slesar employed were Jay Street, John Murray, and Lee Saber. After 1958, he wrote chiefly under his own name. ==Career==