Comic Title: Superman #139
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: August 1960
On Sale Date: June 16, 1960 Copyright Date June 16, 1960
Source: Library of Congress, Periodicals 1960

Frequency: Monthly, with the exception of March, June, September and December
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "The Untold Story of Red Kryptonite"
Pages: 9

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

Writer: Otto Binder
Penciller: Curt Swan
Inker: John Forte

Reprinted In:
Superman Annual #8 (1964)
Superman from the Thirties to the Seventies HC (1971)
Best of DC #36 (1983)
Showcase Presents Superman Vol. 2 TPB (2006)
Showcase Presents:Supergirl Vol. 1 TPB (2008)
Superman:The Man of Tomorrow Archives Vol. 3 HC (2014)

Feature Character(s)

• Superman (last appearance in Superman #139; next appearance in Superman's Girl Friend, Lois Lane #19)

Supporting Character(s)

• Lois Lane (last appearance in Superman #139; next appearance in Superman's Girl Friend, Lois Lane #19)
• Jimmy Olsen (last appearance in Superman #139; next appearance in Superman's Girl Friend, Lois Lane #19)
• Perry White (last appearance in Superman #139; next appearance in Superman's Girl Friend, Lois Lane #19)

Guest Appearance(s)

• Supergirl (last appearance in Action Comics #266; next appearance in Action Comics #268)
• Krypto (last appearance in Action Comics #266; next appearance in Superman #140)

Other Character(s)

• A Navy commander (no further appearances)

Cameo Appearance(s)

• Kozz of Mars (in flashback to the events in the first story of Adventure Comics #255)
• Nerp and Irm Gikk (disguised as Jonathan and Martha Kent; in flashback to the events in the first story of Adventure Comics #270)

Comments:
Superman recalls several previous encounters with Red Kryptonite, including those from the first story of Adventure Comics #255 and the first story of Adventure Comics #270.

Synopsis:
A submarine is trapped at the bottom of the ocean. Superman is called for help, but the crew has spotted a Red Kryptonite meteor near the sub. Superman sends a robot to try and perform the rescue, but the tremendous pressure of the water crushes the robot.

Superman decides to rescue the sub himself and risk the unpredictable effects of the Red Kryptonite. He recalls how it has affected him in the past, and this time it causes his hair and nails to grow long. Being invulnerable, he is unable to cut them. He summons Supergirl and Krypto to use their x-ray vision to give him a shave and a manicure, restoring his appearance to normal.