What Mad Universe x 9

September 1948 issue ~ debut of the story

cover art by Earle Bergey

1949 Dutton hardcover – first book appearance

1950 Bantam reissue – cover art by Herman Bischoff

better image than previously posted

1951 Boardman hardcover from Britain – cover art by Dennis McLoughlin

1954 Bantam reissue – cover art by Charles Binger

better image than previously posted

1954 Boardman paperback reissue – cover art by Pagram

1978 Bantam reissue – cover art by Paul Lehr

1978 Pennyfarthing Press hardcover, limited edition reissue

cover art by Grant Canfield

1981 Doubleday reissue

Day of the Ram x 3

1956 Random House hardcover

1957 Bantam reissue

2nd with Southern California private eye Brock Callahan

cover art by Mitchell Hooks

better image than previously posted

1989 No Exit reissue from the UK