Comic Title: House of Mystery #55
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: October 1956
Approx. On Sale Date: August 2, 1956 Copyright Date July 31, 1956
Source: Library of Congress, Periodicals 1956
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: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Unknown Sentinel"
Pages: 5

Penciller: Mort Meskin
Inker: George Roussos

Reprinted In:
Weird War Tales #4 (1972)
Showcase Presents:Weird War Tales Vol. 1 TPB (2013)