G. C. Edmondson
G. C. Edmondson was the working name of science fiction author Garry Edmonson (full name "José Mario Garry Ordoñez Edmondson y Cotton") (October 11, 1922 in Washington state – December 14, 1995 in San Diego, California). Also wrote westerns using the pseudonyms Kelly P. Gast, J. B. Masterson, and Jack Logan
| Links | https://en.wikipedia.org/wiki/G._C._Edmondson |
Contributing Writer 1
 | The Magazine of Fantasy and Science Fiction, May 1970 | Mass-Market Paperback |
Copyright Holder 1
 | The Man Who Corrupted Earth | Paperback |