Comic Title: Adventure Comics #239
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: August 1957
Approx. On Sale Date: June 27, 1957 Copyright Date June 25, 1957
Source: Library of Congress, Periodicals 1957
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "The Super-Tricks of the Dog of Steel"
Pages: 12

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

Artist: John Sikela

Feature Character(s)

• Superboy (last appearance in Adventure Comics #238; next appearance in Superboy #120)

Supporting Character(s)

• Krypto (last appearance in Superboy #56; next appearance in Superman #173)

Villain(s)

• Bull Reynolds and some radium thieves (no further appearances)

Cameo Appearance(s)

• Lana Lang (splash panel only)

Synopsis:
A strange meteorite gives Krypto the ability to speak for 24 hours. Proud of his new ability, Krypto performs for as many people as possible to show off the talent. The meteorite also seems to have weakened Superboy, making him less powerful than Krypto. Superboy even becomes temporarily paralyzed as a result of the meteorite. Crooks try to take advantage of Krypto's pride and Superboy's immobility, but the Boy of Steel was faking weakness in order to capture them. Before Krypto's speaking ability wears off, Superboy creates an echoing cavern that will preserve his voice for 100 years.