Comic Title: Superman Family #179
Publisher: DC (National Periodical Publications, Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: October 1976
On Sale Date: July 8, 1976 Newsstand Date July 8, 1976
Source: Direct Currents, Amazing World of DC Comics #12

Newsstand Date July 8, 1976
Source: Comic Reader, #132

Copyright Date July 8, 1976
Source: Library of Congress, Periodicals 1976

Newsstand Date July 5, 1976
Source: Daily Planet, Vol. 76 #9
Listed as on sale the week of July 5th

Frequency: Monthly (with the exception of Dec., Feb., May and July)
Cover Price: $0.50
Page Count: 48
Editor: Murray Boltinoff

See Also: The Guide to DC Giants

Title: "Supergirl Visits the 21st Century"
Pages: 7

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

Writer: Otto Binder
Artist: Jim Mooney

Reprinted From:
Action Comics #255 (1959)

Feature Character(s)

• Supergirl (last appearance in Action Comics #254; next appearance in Action Comics #256)

Guest Appearance(s)

• Tommy Tomorrow (earliest chronological appearance; next appearance in Real Fact Comics #6)

Other Character(s)

• Jik (an alien boy; no further appearances)
• Tommy Tomorrow’s parents (no further appearances)

Synopsis:
While reading about a lost Venus probe, Supergirl receives a message from Superman to travel into the future to practice her time-travel abilities. Supergirl flys into the 21st century where she witnesses the lost probe crash through the dome of an asteroid colony. She flys after it to prevent any more damage, but she is surprised when a young boy uses a device to stop the probe.

While exploring the colony, Supergirl encounters a piece of kryptonite which weakens her. The boy, Tommy, happens along and destroys the kryptonite. Indebted to the boy, Supergirl secretly tries to aid him when he is in trouble. The boy’s gadgets allow him to save himself, and Supergirl is not needed.

Supergirl learns the boy is going to be adopted. The adoptive parents are trapped by some meteors. Supergirl rescues them, and they arrive to adopt Tommy. Supergirl returns home and records the adventure with young Tommy Tomorrow in her diary.