Science Fiction Quarterly, Summer 1940

From Author Wars - https://authorwars.com/publications/science-fiction-quarterly-summer-1940-60402.html

Overview:

Title: Science Fiction Quarterly, Summer 1940
Author: Charles D. Hornig
Year: 1940
Publisher: Double Action Magazines
Price: $0.25
Pages: 148
Binding: pulp
Type: MAGAZINE
Title Reference: Polar Doom
Notes: No. 1. Publication month from Ashley's "The Time Machines". Cover art not credited, but a signature is faintly visible.