The Hidden Universe (Part 2 of 2) [2]

From Author Wars - https://authorwars.com/books/the-hidden-universe-part-2-of-2-2-1118256.html

Overview:

Title: The Hidden Universe (Part 2 of 2) [2]
Author: H. R. Hammond
Year: 1939
Type: Interior Art

Editions/Publications:

Unknown. Amazing Stories, December 1939 (Unknown, H. R. Hammond, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)