Comic Title: Masked Marvel #1
Publisher: Centaur (Centaur Publications, Inc.)
Address: 215 Fourth Avenue, New York, NY
Cover Date: September 1940
On Sale Date: June 25, 1940 Copyright Date June 25, 1940
Source: Library of Congress, Periodicals 1940

Newsstand Date July 6, 1940
Source: House Ad, Keen Detective Funnies #24, Page IFC

Frequency: Monthly
Cover Price: $0.10
Page Count: 64
Contains: Ownership Statement
Editor: Lloyd V. Jacquet

Title: "The Case of the Rx"
Pages: 6

Writer/Artist: Maurice Gutwirth

Reprinted From:
Keen Detective Funnies (#3) (1938)