Comic Title: More Fun Comics #103
Publisher: DC (Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: May/Jun 1945
Approx. On Sale Date: March 23, 1945 Copyright Date March 20, 1945
Source: Library of Congress, Periodicals 1945
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: 48
Editor: Jack Schiff

Title: "A Modern Cave Man"
Pages: 7

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

Writer: Don Cameron
Penciller: Joe Shuster
Inker: Marvin Stein

Reprinted In:
Adventures of Superboy HC (2010)

Feature Character(s)

• Superboy (last appearance in More Fun Comics #102; next appearance in More Fun Comics #104)

Villain(s)

• Roscoe and Slappy (no further appearances)

Other Character(s)

• Professor Henry Macon (no further appearances)
• Tiny and an unnamed boy (no further appearances)

Synopsis:
Clark Kent goes camping with two other boys. When a thunderstorm causes the boys to seek shelter, they see a man they believe is a cave man. When the man leaves, the boys examine his cave. Two crooks arrive shortly thereafter and threaten the boys. Clark slips away to become Superboy. He finds the caveman, who is really local inventor Professor Henry Macon. The crooks trapped Macon in the cave in an attempt to extort a formula from him. Superboy apprehends the crooks, and the professor returns home.