Twin Worlds [2,3]
From Author Wars - https://authorwars.com/books/twin-worlds-23-980312.html
Editions/Publications:
- Unknown. Amazing Stories, April 1937 (Unknown, Leo Morey, Teck Publications, Inc., $0.25, 148 pages, pulp, MAGAZINE)
From Author Wars - https://authorwars.com/books/twin-worlds-23-980312.html