Lester del Rey
Leonard Knapp (June 2, 1915 – May 10, 1993), best known by his primary pseudonym Lester del Rey, was an American science fiction author and editor. He was the author of many books in the juvenile Winston Science Fiction series, and the fantasy editor at Del Rey Books, the fantasy and science fiction imprint of Ballantine Books (subsequently Random House), working for his fourth wife Judy-Lynn del Rey.
Also recorded as John Alvarez · Marion Henry · Philip St. John · Charles Satterfield
Lester del Rey

Robert Gibson Jones · Public domain
- Name
- Lester del Rey
- Birth Name
- Leonard Knapp
- Born
- 2 June 1915
- Birthplace
- Saratoga Township, Minnesota, U.S.
- Died
- 10 May 1993
- Place of death
- New York City, U.S.
- Occupation
- Writer, editor
- Full name
- Leonard Knapp.
- Nationality
- United States.
- Fields
- science fiction and science fiction literature.
- Education
- George Washington University.
- Honours
- Damon Knight Memorial Grand Master Award.
VALÉORINE Encyclopedia
VALÉORINE documentary reading
Documentary summary
Leonard Knapp (June 2, 1915 – May 10, 1993), best known by his primary pseudonym Lester del Rey, was an American science fiction author and editor. He was the author of many books in the juvenile Winston Science Fiction series, and the fantasy editor at Del Rey Books, the fantasy and science fiction imprint of Ballantine Books (subsequently Random House), working for his fourth wife Judy-Lynn del Rey.
Admitted source layer · organised and presented by VALÉORINE
Note VALÉORINE
Lester del Rey (1915–1993) was an American editor, journalist and literary critic, among other activities. Born Leonard Knapp in Saratoga Township, the editor died in New York City. Lester del Rey was also known as Charles Satterfield and Edson McCann.
Lester del Rey studied at George Washington University. The editor was a member of Edson McCann. Lester del Rey was active in science fiction and science fiction literature.
Genres include science fiction. Languages used include English. The editor received Damon Knight Memorial Grand Master Award.
Composed from admitted, traceable facts · 26 September 2026
VALÉORINE
Reference Check
Propose documentary evidence for Lester del Rey. A contribution is never written directly as fact: identity, source, rights and evidence gates still decide.
Sign in to contribute
World of VALÉORINE
Documentary connections
Only confirmed graph relationships appear here. Images are shown only when their identity and reuse rights both pass the documentary gate.
Documentary evidence
Documentary basis
Authority files
wikidata · Q684748 · wikipedia · Lester del Rey
In this article
Biography
Biography
Lester del Rey studied at George Washington University. The recorded working language is English. The field of work recorded is science fiction and science fiction literature. Subjects and genres recorded for the work are science fiction. Distinctions recorded are Damon Knight Memorial Grand Master Award.

Cover of Fantastic Universe, March 1960
Great American Publications / Ed Emshwiller

Cover of Fantastic Universe, January 1960
Great American Publications / Ed Emshwiller
Key facts
Key facts
• Name — Lester del Rey • Pen Name — John Alvarez, Marion Henry, Philip James, Philip St. John, Charles Satterfield, Erik van Lhin, Kenneth Wright • Birth Name — Leonard Knapp • Born — 2 June 1915 • Birthplace — Saratoga Township, Minnesota, U.S. • Died — 10 May 1993 • Place of death — New York City, U.S. • Occupation — Writer, editor • Period — 1938–1991 • Genre — Fantasy, science fiction • Illustration — Del Rey's novella When the World Tottered was the cover story in the December 1950 issue of Fantastic Adventures, illustrated by Robert Gibson Jones • Illustration — Del Rey's novelette "The Wind Between the Worlds" was the cover story in the March 1951 issue of Galaxy Science Fiction • Illustration — Del Rey's novelette "I Am Tomorrow" was the cover story in the debut issue of Dynamic Science Fiction in 1952 • Illustration — Del Rey's short novel The Life Watch took the cover of the September 1954 issue of Fantastic Universe • Illustration — Del Rey's novel Badge of Infamy took the cover of the June 1957 issue of Satellite Science Fiction • Illustration — Del Rey's "Spawning Ground" was the cover story in the September 1961 issue of If
Original name
Original name
Del Rey often told people that his real name was Ramon Felipe Alvarez-del Rey (and sometimes facetiously even Ramón Felipe San Juan Mario Silvio Enrico Smith Heartcourt-Brace Sierra y Alvarez del Rey y de los Verdes). However, his sister has confirmed that his name was in fact Leonard Knapp. He also claimed that his family was killed in a car accident in 1935. In reality, the accident only killed his first wife.
Writing career
Writing career
Del Rey first started publishing stories in pulp magazines in the late 1930s, at the dawn of the so-called Golden Age of Science Fiction. He was associated with the most prestigious science fiction magazine of the era, Astounding Science Fiction, from the time its editor John W. Campbell published his first short story in the April 1938 issue: "The Faithful", already under the name Lester del Rey. The December 1938 issue featured his story "Helen O'Loy" which was selected for the prestigious anthology The Science Fiction Hall of Fame. By the end of 1939 he had also placed stories in Weird Tales (edited by Farnsworth Wright) and Unknown (Campbell), which featured more horror and more fantasy respectively. During a period when del Rey's work was not selling well, he worked as a short order cook at the White Tower Restaurant in New York. After he married his second wife, Helen Schlaz, in 1945, he quit that job to write full-time. In 1952, his first three novels were published in the Winston juvenile series, one of which (Rocket Jockey) appearing in an Italian-language edition in the same year. In the 1950s, del Rey was one of the main authors writing science fiction for adolescents, along with Robert A. Heinlein and Andre Norton. During this time some of his fiction was published under multiple pseudonyms, including Philip St. John and Erik van Lhin. He continued publishing novels, as well as short fiction, both under his primary pseudonym Lester del Rey as well as a number of other pen names, at a fast pace through the 1950s and the early sixties. His novel writing slowed down toward the end of the sixties, with his last novel, Weeping May Tarry (written with Raymond F. Jones) appearing from Pinnacle Books in 1978.
Editor and critic
Editor and critic
After meeting Scott Meredith at the 1947 World Science Fiction Convention, he began working as a first reader for the new Scott Meredith Literary Agency, where he also served as office manager. He later became an editor for several pulp magazines and then for book publishers. During 1952 and 1953, del Rey edited several magazines: Space SF, Fantasy Fiction, Science Fiction Adventures (as Philip St. John), Rocket Stories (as Wade Kaempfert), and Fantasy Fiction (as Cameron Hall). During this period he also edited several anthologies, notably editing the "Best Science Fiction Stories of the Year" series from 1972 to 1976. Del Rey was most successful editing with his fourth wife, Judy-Lynn del Rey, at Ballantine Books (as a Random House property, post-Ballantine) where they established the fantasy and science fiction imprint Del Rey Books in 1977. He retired from the publishing house in February 1992. In 1957, del Rey and Damon Knight co-edited a small amateur magazine named Science Fiction Forum. During a debate about symbolism within the magazine, del Rey accepted Knight's challenge to write an analysis of the James Blish story "Common Time" that showed the story was about a man eating a ham sandwich. After science fiction gained respectability and began to be taught in classrooms, del Rey stated that academics interested in the genre should "get out of my ghetto". Del Rey said that "to develop, science fiction had to remove itself from the usual critics who viewed it from the perspective of [the] mainstream, and who judged its worth largely on its mainstream values. As part of that mainstream, it would never have had the freedom to make the choices it did — many of them quite possibly wrong, but necessary for its development." Starting in September 1969, he wrote the "Reading Room" review column for If, and following the demise of If in 1974, switched to writing the review column for Analog Science Fiction and Fact titled "The Reference Library". Del Rey was a member of a literary banqueting club, the Trap Door Spiders, which served as the basis of Isaac Asimov's fictional group of mystery solvers, the Black Widowers. Del Rey was the model for "Emmanuel Rubin".
Death
Death
Lester del Rey died on May 10, 1993, at New York Hospital at the age of 77 after a brief illness.
Style
Style
"There is no writer in this field who is more steadfast in practicing the rule that fiction is first of all entertainment", Algis Budrys said in 1965. Reporting that the stories in a collection of del Rey's fiction could not be dated by reading them, Budrys stated that he had remained a successful writer because "del Rey has remained his own individual... he writes for himself, and his readers". Budrys said that
Jim Stanley series
Jim Stanley series
• Step to the Stars (1954) • Mission to the Moon (1956) • Moon of Mutiny (1961)
Other novels
Other novels
• Marooned on Mars (1952) • Rocket Jockey as Philip St. John (1952) • A Pirate Flag for Monterey (1952) • Attack from Atlantis (1953) • Battle on Mercury as Erik Van Lhin (1953) • The Mysterious Planet as Kenneth Wright (1953) • Rockets to Nowhere as Philip St. John (1954) • For I Am a Jealous People (1954) • Preferred Risk (1955) with Frederik Pohl [as by Edson McCann] • Nerves (1956) [Expansion of 1942 novella; revised in 1976] • Police Your Planet as Erik Van Lhin (1956) • Day of the Giants (1959) • The Eleventh Commandment (1962) • Outpost of Jupiter (1963) • The Sky Is Falling (1963) • Badge of Infamy (1963) • Pstalemate / Psi (1971) • Weeping May Tarry (1978) with Raymond F. Jones
Collaborations with Paul W. Fairman
Collaborations with Paul W. Fairman
These seven novels were ghost-written by Fairman based on outlines by del Rey, and published as by del Rey. • The Runaway Robot (1965) • The Infinite Worlds of Maybe (1966) • Rocket from Infinity (1966) • The Scheme of Things (1966) • Siege Perilous (1966) • Tunnel Through Time (1966) • Prisoners of Space (1968)
Nonfiction
Nonfiction
• Rockets Through Space (1957) • Space Flight, General Mills, Inc. 1958, 1957; Golden Press, 1959 • The Mysterious Earth (1960) • The Mysterious Sea (1961) • Rocks and What They Tell Us (1961) • The Mysterious Sky (1964) • The World of Science Fiction, 1926–1976: the History of a Subculture (1979)
As editor
As editor
• The Year After Tomorrow with Carl Carmer and Cecile Matschat (1954) • Best Science Fiction of the Year #1–5 (1972–1976) • Once Upon a Time: A Treasury of Modern Fairy Tales with Risa Kessler (1991)
Identity and origins
Identity and origins
Lester del Rey was recorded at birth as Leonard Knapp. He also worked under the names Charles Satterfield, Edson McCann and John Alvarez. The authorities additionally record the headings John Alvarez, Marion Henry, Philip James, Philip St. John and Charles Satterfield. His recorded language was English. He married Judy-Lynn del Rey and Evelyn Harrison.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1915
Lester del Rey born at Saratoga Township.
1993
Lester del Rey died at New York City.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Saratoga Township.
Birth place
New York City.
Death place
Short fiction collections
•... And Some Were Human (1948) • Robots and Changelings (1957) • The Sky Is Falling and Badge of Infamy (1966) • Mortals and Monsters (1965) • Gods and Golems (1973) • The Early del Rey (1975) • The Early del Rey: Vol 1 (1976) • The Early del Rey: Vol 2 (1976) • The Best of Lester del Rey (1978) • War and Space (2009) • Robots and Magic (2010)
Awards
Del Rey was awarded the 1972 E. E. Smith Memorial Award for Imaginative Fiction (the "Skylark") by the New England Science Fiction Association for "contributing significantly to science fiction, both through work in the field and by exemplifying the personal qualities that made the late "Doc" Smith well-loved by those who knew him". He also won a special 1985 Balrog Award for his contributions to fantasy, voted by fans and organized by Locus magazine. The Science Fiction Writers of America named him its 11th SFWA Grand Master in 1990, presented 1991.
Literature
Literature
L'immortale dio Pan: The Pipes of Pan di Lester Del Rey, Studi Classici e Orientali, 2019
Lester del Rey
General and cited references
General and cited references
*
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Stableford, Brian and Clute, John. "del Rey, Lester", Encyclopedia of Science Fiction. Retrieved September 9, 2020.
- 2.SFE: del Rey, Lester. sf-encyclopedia.com.
- 3.Locus Publications. People & Publishing. Locus. 8. January 2008.
- 4.(ISFDB). Retrieved April 12, 2013.
- 5.Moskowitz, Sam. Seekers of Tomorrow. World Publishing Company. 167–186. 1966.
- 6.Knight, Damon. The Futurians. John Day. 180. 1977. 0-381-98288-2.
- 7.Davin, Eric Leif. From Wisconsin to Mars: A Conversation with Raymond F. Gallun. Pioneers of Wonder. 216. 1999.
- 8.Ashley, Michael. The History of the Science Fiction Magazine, Vol. 3: 1946-1955. CBI. 331. 1975. 0-8092-7841-3.
- 9.Davin, Eric Leif. Pioneers of Wonder. Prometheus Books. 226. 1999. 1-57392-702-3.
- 10.Obituaries: Lester del Rey, 77, Editor and Author. New York Times. May 12, 1993.
- 11.Knight, Damon. In Search of Wonder. Advent:Publishers. 284. 1996. 0-911682-31-7.
- 12.Letson, Russell. Contributions to the Critical Dialogue: As an Academic Sees It. Science Fiction Fandom. 230–232. 1994.
- 13.Ashley, Michael. Gateways to Forever: The Story of the Science Fiction Magazines from 1970-1980. Liverpool University Press. 295. 2007. 978-1-84631-003-4.
- 14.Davin, Eric Leif. Pioneers of Wonder. Prometheus Books. 14–15. 1999. 1-57392-702-3.
- 15.Asimov, Isaac. I. Asimov: A Memoir. Doubleday. 380–383. 1994. 0-385-41701-2.
- 16.Budrys, Algis. Galaxy Bookshelf. Galaxy Science Fiction. 147–156. December 1965.
- 17."del Rey, Lester" . The Locus Index to SF Awards: Index to Literary Nominees. Locus Publications. Retrieved April 2, 2013.
- 18."Damon Knight Memorial Grand Master" . Science Fiction and Fantasy Writers of America (SFWA). Retrieved April 2, 2013.
- 19.Clute, John. The Encyclopedia of science fiction. New York : St. Martin's Press. 319. 1993. 978-0-312-09618-2.
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Secondary witnessreference work
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 15 August 2026.
Elsewhere in Books
38,960 published records in this field, each with its sources named.
- Leslie StephenAuthor
- Leslie ThomasAuthor
- Lestat de LioncourtAuthor
- Lester B. PearsonAuthor
- Lester Frank WardAuthor
- Lester RoloffAuthor
- Lester Russell BrownAuthor
- Lesya UkrainkaAuthor
Best supported in this field
For owners
Own a work by Lester del Rey?
A specialist will read what you send and tell you what the house can establish, what it cannot, and whether the object is suited to sale. There is no charge and no obligation. The object stays with you throughout; nothing is shipped to us unless it is arranged in writing beforehand.