Secret League of Six
From Author Wars - https://authorwars.com/books/secret-league-of-six-737921.html
Editions/Publications:
- Unknown. Fantastic Adventures, August 1941 (Unknown, Magarian, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
- 2015 . Fantastic Adventures, August 1941 (2015, Magarian, Pulp Tales Press, ISBN-10: 9781514835869, $12.95, 148 pages, Trade Paperback, Anthology)