Supermen

From Author Wars - https://authorwars.com/books/supermen-130987.html

Overview:

Title: Supermen
Author: Cal Webb
Year: 1950
Type: Essays

Editions/Publications:

Unknown. Fantastic Adventures, July 1950 (Unknown, Cal Webb, Ziff-Davis Publishing Company, $0.25, 164 pages, pulp, MAGAZINE)
Unknown. Fantastic Adventures No. 21 (Unknown, Cal Webb, Hermitage Publications, 1/-, 100 pages, pulp, MAGAZINE)