September 1936 issue ~ cover art by Delos Palmer September 1936 cover art by Delos Palmer better image than previously posted
1946 Bantam paperback – cover art by Bill English 1946 Bantam paperback reissue cover art by Bill English better image than previously posted 1942 Farrar & Rinehart hardcover
August 1934 issue ~ cover art by Harold Woolridge August 1934 cover art by Harold Woolridge better image than previously posted
March 1948 issue – cover art by Bob Fujitani March 1948 cover art by Bob Fujitani better image than previously posted
March 1932 issue ~ cover by Tom Lovell March 1932 cover by Tom Lovell better image than previously posted
Origin of Evil x 3 1953 Pocket reissue cover art by Verne Tossey 1956 Pocket reissue cover art by Larry Newquist better image than previously posted 1961 Great Pan UK reissue cover art by Sheldon
1968 Dell reissue – cover art by Roger Kastel May 1968 Dell reissue, first printing cover art by Roger Kastel better image than previously posted