Comic Title: Action Comics #273
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: February 1961
On Sale Date: December 29, 1960 Newsstand Date December 29, 1960
Source: House Ad, Superman's Girl Friend Lois Lane #23, Page 21

Copyright Date December 29, 1960
Source: Library of Congress, Periodicals 1961

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Circulation: 458000
Editor: Mort Weisinger

Title: "The Supergirl of Two Worlds"
Pages: 13

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

Writer: Otto Binder
Artist: Jim Mooney

Reprinted In:
Supergirl Archives Vol. 2 HC (2004)
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 #272; next appearance in Action Comics #274)

Supporting Character(s)

• Superman (last appearance in Action Comics #272; next appearance in World's Finest Comics #115)

Other Character(s)

• Marvel Maid and Marvel Man (last appearance in Action Comics #272; no further appearances)

Comments:
This story is continued from the second story of Action Comics #272.

This issue also features a one page feature which allows readers to vote on which hair style they want for Linda (Supergirl) Lee.

Synopsis:
Supergirl and Marvel Man repair Marvel Maid’s Fortress that has crashed on Terra. Marvel Maid returns from her space mission and praises Supergirl’s work. She then travels to Earth to inform Superman of his cousin’s deeds. Superman initially mistakes Marvel Maid for Supergirl and tells her that he intends to announce her existance to the world.

Marvel Maid explains who she is and then she watches Supergirl on a monitor, as the Girl of Steel works on Terra. Supergirl makes a mistake during a rescue, but she is bailed out by Marvel Man. Marvel Maid returns to Terra and awards her cousin by announcing his existance to their world. When Supergirl returns to Earth, however, Superman decides she needs more training since her mistakes on Terra could have been prevented if she had studied the planetary differences before she arrived.