Comic Title: Mystery in Space #30
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: Feb/Mar 1956
Approx. On Sale Date: December 13, 1955 Copyright Date December 11, 1955
Source: Library of Congress, Periodicals 1955
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Contains: Ownership Statement
Editor: Julius Schwartz

Title: "The Impossible World Named Earth"
Pages: 6

Writer: Otto Binder
Penciller: Gil Kane
Inker: Joe Giella

Reprinted In:
From Beyond the Unknown #17 (1972)