Del Rey, Lester

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.