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(Planet Stories, March 1951)
(Planet Stories, May 1951)
(Future/ SF Stories, September 1951)
(Planet Stories, January 1952)
(Galaxy, March 1952)
(If, November 1952)
(If, July 1953)
(Orbit Magazine #2, December 1953)
(Infinity Science Fiction, June 1957)
(Amazing, August 1960)
(Analog (Astounding), September 1960)
(Analog, October 1960)
(Galaxy, December 1960)
(Analog, February 1961)
(If, September 1961)
(If, January 1962)