Comic Title: Adventure Comics #304
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: January 1963
On Sale Date: November 29, 1962 Newsstand Date November 29, 1962
Source: House Ad, Superman's Pal Jimmy Olsen #66, Page 21

Copyright Date November 29, 1962
Source: Library of Congress, Periodicals 1962


Newsstand Date November 29, 1962
Source: Newsdealer Magazine, V17 #10

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The War Between Superboy and Superman"
Pages: 13

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

Writer: Jerry Siegel
Artist: George Papp

Feature Character(s)

• Superboy (last appearance in Superboy #102; next appearance in Adventure Comics #304)

Supporting Character(s)

• Jonathan Kent (last appearance in Superboy #102; next appearance in Adventure Comics #305)
• Martha Kent (last appearance in Superboy #102; next appearance in Adventure Comics #305)
• Lana Lang (last appearance in Adventure Comics #303; next appearance in Adventure Comics #305)
• Krypto (last appearance in Superboy #101; next appearance in Superboy #103)
• Police Chief Parker (last appearance in Superboy #102; next appearance in Adventure Comics #306)

Villain(s)

• Roz-Em (a Kryptonian criminal; next appearance in Adventure Comics #395)

Guest Appearance(s)

• Jor-El (appears in flashback; last appearance in Superboy #121; next appearance in Superman #233)

Other Character(s)

• Nim-El (Jor-El’s twin brother; first appearance; last appearance in World of Krypton #1; no further appearances)
• Various army personnel (no further appearances)

Synopsis:
While testing some new weapons for the military, Superboy encounters an older version of himself, Superman. Superman explains that Red Kryptonite causes him to be created and if both remain on Earth, the forces of time and space will destroy the world.

Superboy agrees to leave Earth, but he is brought back by Krypto. Jonathan Kent had Krypto fetch his master because he has learned that Superman is an imposter. He is really Roz-Em, a Kryptonian criminal and former enemy of Jor-El. After learning the truth about Roz-Em’s deception, Superboy sends the villain into the Phantom Zone.