Comic Title: Batman #139
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: April 1961
On Sale Date: February 23, 1961 Copyright Date February 23, 1961
Source: Library of Congress, Periodicals 1961

Newsstand Date February 23, 1961
Source: Newsdealer Magazine, V15 #12

Frequency: Monthly, with the exception of Jan., May, July, and Nov.
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "Bat-Girl"
Pages: 8

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

Writer: Bill Finger
Penciller: Sheldon Moldoff
Inker: Charles Paris

Reprinted In:
Batman Annual #7 (1964)
Batman from the 30s to the 70s HC (1972)
Batman Annuals Vol. 2 HC (2010)
Batgirl:A Celebration of 50 Years HC (2017)

Feature Character(s)

• Batman (last appearance in Batman #139; next appearance in Justice League of America #4)

Supporting Character(s)

• Robin (last appearance in Batman #139; next appearance in Detective Comics #290)
• Batwoman (last appearance in Detective Comics #286; next appearance in World's Finest Comics #117)
• Bat-Girl (Betty Kane; next appearance in Batman #141)

Villain(s)

• King Cobra and the Cobra Gang (no further appearances)

Synopsis:
Kathy Kane’s niece Betty visits from out of town and learns Kathy’s secret identity of Batwoman. Betty devises a costume for herself and becomes Bat-Girl. Batwoman agrees to train Betty, but she is really just stalling, hoping that Betty will give up. To prove herself, Betty tries to apprehend the Cobra Gang herself, but is captured herself. She does manage to alert Batman and Batwoman to her peril and is rescued. In the battle with the Cobra Gang, Betty performs admirably, earning the right to wear the costume again someday.