Comic Title: Action Comics #259
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: December 1959
On Sale Date: October 29, 1959 Newsstand Date October 29, 1959
Source: House Ad, Superman's Pal Jimmy Olsen #41, Page 10

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

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

Title: "The Cave-Girl of Steel"
Pages: 7

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

Writer: Otto Binder
Artist: Jim Mooney

Reprinted In:
Action Comics #334 (1966)
Supergirl Archives Vol. 1 HC (2001)
Showcase Presents:Supergirl Vol. 1 TPB (2008)
Supergirl:The Silver Age Omnibus Vol. 1 HC (2016)
Supergirl:The Silver Age Vol. 1 TPB (2017)

Feature Character(s)

• Supergirl (last appearance in Action Comics #258; next appearance in Superman #134)

Other Character(s)

• A small baby and a nurse (no further appearances)
• A tribe of prehistoric cave men (no further appearances)

Cameo Appearance(s)

• Superman (Supergirl sees him with her telescopic vision)

Synopsis:
Supergirl saves a small baby from being suffocated by a plastic bag. While she is happy to help, she wants some excitement. She travels back into the past into a land of dinosaurs.

While in the past, she discovers a tribe of prehistoric men. She rescues a baby from a pterodactyl and befriends the tribe. Later, the girl of steel tames a dinosaur which she uses to help some natives across a river. Supergirl also helps them chase off a fire-breathing sea serpent.

When she returns to the present, Supergirl finds that the chief has carved a picture of her into stone. The archeologists believe they imagined a flying goddess.