Comic Title: Superman's Pal Jimmy Olsen #9
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: December 1955
On Sale Date: October 13, 1955 Copyright Date October 11, 1955
Source: Library of Congress, Periodicals 1955
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.

Newsstand Date October 13, 1955
Source: Newsdealer Magazine, V10 #8

Frequency: Monthly, with the exception of January, May, July and November
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "Jimmy Olsen, Cub Inventor"
Pages: 8

Feature(s):
Jimmy Olsen (of Earth-1)

Writer: Otto Binder
Penciller: Curt Swan
Inker: Ray Burnley

Reprinted In:
Showcase Presents:Superman Family Vol. 1 TPB (2006)

Feature Character(s)

• Jimmy Olsen (last appearance in Action Comics #210; next appearance in Superman's Pal Jimmy Olsen #9)

Supporting Character(s)

• Superman (last appearance in World's Finest Comics #79; next appearance in Superman's Pal Jimmy Olsen #9)

Villain(s)

• Ghost Gordon and his two henchmen (Monk named; jewel thieves; no further appearances)

Other Character(s)

• Mr. Hardy (a building superintendent; no further appearances)

Synopsis:
Jimmy Olsen experiments in his apartment with different inventions. One new invention turns out to be a time radio, which broadcasts words from the past.

Superman asks Jimmy to use the radio to tune in on a bank robbery from three nights earlier. The crooks learn of Jimmy’s invention and try to stop him from using it against them. Jimmy disguises himself to delay the crooks long enough for Superman to arrive. The Man of Steel then reveals the invention was a hoax to smoke out the crooks.