Comic Title: Action Comics #309
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: February 1964
On Sale Date: December 26, 1963 Copyright Date December 26, 1963
Source: Library of Congress, Periodicals 1964

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

Title: "The Untold Story of Argo City"
Pages: 12

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

Writer: Leo Dorfman
Artist: Jim Mooney

Reprinted In:
Adventure Comics #416 (1972)
Showcase Presents Supergirl Vol. 2 TPB (2009)
Supergirl:The Silver Age Omnibus Vol. 2 HC (2018)

Feature Character(s)

• Supergirl (last appearance in Superman #170; next appearance in Superman's Pal, Jimmy Olsen #75)

Supporting Character(s)

• Fred Danvers (last appearance in Action Comics #308; next appearance in Action Comics #310)
• Edna Danvers (last appearance in Action Comics #308; next appearance in Action Comics #310)
• Dick Malverne (last appearance in Action Comics #308; next appearance in Action Comics #311)
• Comet (last appearance in Action Comics #309; next appearance in Action Comics #310)
• Zor-El (last appearance in Action Comics #252; next appearance in Action Comics #310)
• Allura (last appearance in Action Comics #252; next appearance in Action Comics #310)

Villain(s)

• Jax-Ur (last appearance in Superman #167; next appearance in Action Comics #310)
• General Zod (last appearance in Action Comics #307; next appearance in Action Comics #321)
• Professor Vakox (last appearance in Action Comics #307; next appearance in Action Comics #310)
• Kru-El (last appearance in Action Comics #298; next appearance in Action Comics #336)
• Jer-Em (no further appearances)

Guest Appearance(s)

• Jor-El (appears in flashback; no further appearances)

Other Character(s)

• Citizens of Argo City (die in this story; no further appearances)
• Some orphan children and two parents (no further appearances)

Cameo Appearance(s)

• Superman (referenced by Zor-El)

Comments:
Supergirl's origin is told in greater detail in this story.

The existance of the Survival Zone is revealed in this story. Zor-El and Allura escaped the destruction of Argo City and exist trapped in the Zone.

Synopsis:
Supergirl dreams that her parents are trying to communicate with her. Though she believes them dead, she searches the Phantom Zone for them, while being taunted by the prisoners within. Using a chronoscope, Supergirl views Argo City's construction and destruction again. This time she continues to watch past the point when her rocket was launched. She learns her parents exiled themselves to the Survival Zone which exists on a different wavelength than the Phantom Zone. Her parents still live, but are trapped in the Survival Zone with no way out.