The Invisible World
From Author Wars - https://authorwars.com/books/the-invisible-world-837780.html
Overview:
- Title: The Invisible World
- Author: H. R. Hammond
- Year: 1940
- Type: Interior Art
Editions/Publications:
- Unknown. Amazing Stories, October 1940 (Unknown, H. R. Hammond, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
- Unknown. Science Fiction Classics #16 (Unknown, H. R. Hammond, Pulp Tales Press, $12.95, 146 pages, Trade Paperback, Anthology)
- 2013 . Amazing Stories, October 1940 (2013, H. R. Hammond, Pulp Tales Press, ISBN-10: 9780615931425, 148 pages, Trade Paperback, Anthology)