Comic Title: Adventure Comics #390
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: Mar/Apr 1970
On Sale Date: January 8, 1970 Newsstand Date January 8, 1970
Source: Comic Reader, #76

Copyright Date January 8, 1970
Source: Library of Congress, Periodicals 1970

Newsstand Date January 13, 1970
Source: House Ad, Phantom Stranger #6, Page 10

Frequency: Monthly (semi-monthly, March)
Cover Price: $0.25
Page Count: 64
Editor: Mort Weisinger

See Also: The Guide to DC Giants

Notes:
This issue is labeled Giant #G-69.

Title: "Supergirl's Cowboy Hero"
Pages: 13

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

Writer: Leo Dorfman
Artist: Jim Mooney

Reprinted From:
Action Comics #311 (1964)

Feature Character(s)

• Supergirl (last appearance in Action Comics #310; next appearance in Action Comics #312)

Supporting Character(s)

• Comet (last appearance in Action Comics #310; next appearance in Action Comics #312)
• Dick Malverne (last appearance in Action Comics #309; next appearance in Action Comics #314)
• Jerro (last appearance in Action Comics #307; next appearance in Action Comics #326)

Villain(s)

• The Hooded Demon (a masked criminal; no further appearances)

Guest Appearance(s)

• Clark Kent (last appearance in Action Comics #312; next appearance in Superman's Pal, Jimmy Olsen #76)
• Perry White (last appearance in Action Comics #312; next appearance in Superman's Pal, Jimmy Olsen #76)
• Lois Lane (last appearance in Action Comics #312; next appearance in Superman's Pal, Jimmy Olsen #76)

Other Character(s)

• Circe (last appearance in Superman's Girl Friend, Lois Lane #40; next appearance in Action Comics #323)
• Sandy Powers (a friend of Linda Danvers; no further appearances)
• Members of a posse (no further appearances)

Cameo Appearance(s)

• Maldor (spelled Malador in this story; in flashback to the second story of Action Comics #293)

Comments:
Comet's origin is retold in this story.

This story was originally entitled: "The Day Super-Horse Became Human"

Synopsis:
Comet travels back in time to visit his former love Circe in hopes that she may find a way to make him human. Circe creates a potion that will take effect shortly after Comet returns to the present. However, when Comet arrives back in his own time, he has amnesia.

A masked crook called the Hooded Demon finds Comet and uses him to commit a series of robberies. Comet's powers then begin to wear off and both he and the bandit are wounded. Comet's transformation then begins. He becomes human again.

A posse searching for the masked crook believe Comet is the bandit. Comet elludes them and manages to spend some time with Linda Danvers. She thinks he is Bronco Bill, whom she once met as Supergirl. The posse eventually catches up to Comet forcing him to flee.

Supergirl pursues him too, so Comet wishes Circe to reverse the effects of the potion. She complies, and Comet changes back to a horse. The real Hooded Demon is caught clearing Bronco Bill, and Supergirl still does not know that he was really Comet.