Unknown, October 1940

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Overview:

Title: Unknown, October 1940
Author: John W. Campbell, Jr.
Year: 1940
Publisher: Street & Smith Publications, Inc.
Price: $0.20
Pages: 164
Binding: pulp
Type: MAGAZINE
Title Reference: The Wheels of If
Notes: Volume IV, Number 2
No cover art. Interior art by Cartier, Gilmore, Kramer, and Schneeman.