Comic Title: Adventure Comics #266
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: November 1959
On Sale Date: September 29, 1959 Newsstand Date September 29, 1959
Source: House Ad, Superman's Girl Friend Lois Lane #13, Page 20

Copyright Date September 29, 1959
Source: Library of Congress, Periodicals 1959

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "The Super-Pranks of Krypto"
Pages: 12

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

Writer: Jerry Siegel
Artist: George Papp

Feature Character(s)

• Superboy (last appearance in Adventure Comics #265; next appearance in Superboy #77)

Supporting Character(s)

• Jonathan Kent (last appearance in Adventure Comics #265; next appearance in Superboy #77)
• Martha Kent (last appearance in Adventure Comics #265; next appearance in Superboy #77)
• Lana Lang (last appearance in Adventure Comics #265; next appearance in Superboy #78)
• Krypto (last appearance in Adventure Comics #265; next appearance in Superboy #77)
• Lewis Lang (last appearance in Adventure Comics #254; next appearance in Superboy #86)

Villain(s)

• Kosmon, the Hunter (no further appearances)
• A protoplasmic blob (disguised as Krypto; no further appearances)

Synopsis:
Krypto returns to Earth and begins pulling super-pranks including revealing Superboy’s secret identity to Lana Lang. Superboy chases Krypto into space where he meets Kosmon, the Hunter. Kosmon collects creatures for his space zoo. He uses a blob creature to imitate Krypto in order to lure Superboy into space. Kosmon wants to add Superboy to his collection.

Superboy escapes from Kosmon and frees the real Krypto, who Kosmon had imprisoned. Kosmon agrees to leave Superboy alone, so the Boy of Steel returns to Earth, where Krypto helps to cover up his secret identity again, for Lana’s benefit.