Comic Title: Detective Comics #300
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: February 1962
On Sale Date: December 26, 1961 Copyright Date December 26, 1961
Source: Library of Congress, Periodicals 1962

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Circulation: 325000
Editor: Jack Schiff

Title: "The J'onn J'onzz Museum"
Pages: 7

Feature(s):
Martian Manhunter (of Earth-1)

Artist: Joe Certa

Reprinted In:
Showcase Presents:Martian Manhunter Vol. 1 TPB (2007)

Feature Character(s)

• Martian Manhunter (last appearance in Justice League of America #9; next appearance in Detective Comics #301)

Supporting Character(s)

• Captain Harding (last appearance in Detective Comics #297; next appearance in Detective Comics #301)

Villain(s)

• A criminal gang (no further appearances)

Other Character(s)

• Aloysius Bean (a museum owner; no further appearances)

Synopsis:
Aloysius Bean opens a museum in the honor of J’onn J’onzz. He shows a film of the Manhunter in action, and it reveals J’onn’s fire weakness. Some criminals take advantage of this knowledge when J’onn tries to stop them. They use fire against him, but it doesn’t work. J’onn has used a substitute dummy for himself. The crooks believe they are wrong about the fire weakness and are sent to prison.