Signposts in Space

From Author Wars - https://authorwars.com/books/signposts-in-space-2201437.html

Overview:

Title: Signposts in Space
Author: F. O. T.
Year: 1941
Type: Essays

Editions/Publications:

Unknown. Comet, March 1941 (Unknown, F. O. T., H-K Publications, $0.20, 132 pages, pulp, MAGAZINE)