Unknown, December 1939

From Author Wars - https://authorwars.com/publications/unknown-december-1939-61845.html

Overview:

Title: Unknown, December 1939
Author: John W. Campbell, Jr.
Year: 1939
Publisher: Street & Smith Publications, Inc.
Price: $0.20
Pages: 164
Binding: pulp
Type: MAGAZINE
Title Reference: Five Fathoms of Pearls
Notes: Volume II, Number 4
Interior art by Cartier, Hewitt, Isip, Kramer, and Orban.
Miller/Contento does not list the review of "The Story of Prophecy".
Unknown Worlds, December 1939 on UNZ.org.