IF Worlds of Science Fiction, May 1955

George Henry Smith was an American science fiction author, who also wrote soft-core erotica. He wrote more than 100 novels using dozens of pen-names.

Irving Cox Jr. is the author behind Cosmic Critiques, a sharp look at science fiction. He's got a knack for dissecting genre fiction with a clear, no-nonsense style. If you're into thoughtful reviews of sci-fi, his work is worth checking out.

Blish trained as a biologist at Rutgers and Columbia University, and spent 1942–1944 as a medical technician in the U.S. Army. After the war he became the science editor for the Pfizer Pharmaceutical Company. His first published story appeared in 1940, and his writing career progressed until he gave up his job to become a professional writer. He married literary agent Virginia Kidd in 1947. He worked for the Tobacco Institute from 1962-1968. In 1968, he emigrated to England. Between 1967 and hi...

James L. Quinn is the author of the novel If and the short story collection February 1958. His work often explores themes of memory and the passage of time.

Poul William Anderson was an American science fiction author who began his career during one of the Golden Ages of the genre and continued to write and remain popular into the 21st century. Anderson also authored several works of fantasy, historical novels, and a prodigious number of short stories. He received numerous awards for his writing, including seven Hugo Awards and three Nebula Awards. Anderson received a degree in physics from the University of Minnesota in 1948. He married Karen Kr...