Comic Title: Superman #178
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: July 1965
On Sale Date: May 6, 1965 Copyright Date May 6, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly, with the exception of March, June, Sept. and Dec.
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "When Superman Lost His Memory"
Pages: 12

Feature(s):
Superman (of Earth-1)

Writer: Leo Dorfman
Penciller: Curt Swan
Inker: George Klein

Feature Character(s)

• Superman (last appearance in Superman #178; next appearance in Superman's Girl Friend, Lois Lane #58)

Supporting Character(s)

• Jimmy Olsen (last appearance in Superman #178; next appearance in Action Comics #326)
• Lois Lane (last appearance in Superman's Pal, Jimmy Olsen #85; next appearance in Superman's Girl Friend, Lois Lane #58)
• Perry White (last appearance in Superman #178; next appearance in Superman's Girl Friend, Lois Lane #58)

Villain(s)

• A gang of train robbers (no further appearances)

Other Character(s)

• Several costume party guests and a group of construction workers (no further appearances)

Synopsis:
While performing a rescue at sea, Superman encounters a new Kryptonite alloy formed from Red and Gold Kryptonite. The radiation causes Superman to lose his memory. When he reaches shore in his Superman costume, he is mistaken for a guest at a costume party. Though he still possesses his super powers, Superman thinks they come from his costume.

A report that Superman has died causes Superman to believe that he was chosen as a substitute for Superman. He finds his way to the Daily Planet where the staff recognize him as Clark Kent. Superman then assumes his regular secret identity, not knowing that he is really the Man of Steel.

Acting as a substitute for himself, Superman assumes his regular duties, until an electrical accident restores his memory.