Comic Title: Action Comics #231
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: "Sir Jimmy Olsen, Knight of Metropolis"
Pages: 12

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

Writer: Otto Binder
Penciller: Wayne Boring
Inker: Stan Kaye

Feature Character(s)

• Superman (last appearance in Superman #115; next appearance in Superman's Pal Jimmy Olsen #23)

Supporting Character(s)

• Jimmy Olsen (last appearance in Superman #115; next appearance in Superman's Pal Jimmy Olsen #23)
• Lois Lane (last appearance in Superman #115; next appearance in Superman's Pal Jimmy Olsen #23)
• Perry White (last appearance in Superman #115; next appearance in Superman's Pal Jimmy Olsen #23)

Villain(s)

• The Sea Gang (a notorious band of criminals; no further appearances)

Other Character(s)

• Professor Peabody (no further appearances)

Synopsis:
Jimmy Olsen is the heir to the kingdom of Vumania. Jimmy must complete three tasks to claim his inheritance. Superman assists Jimmy in completing the strange quests, as a band of crooks tries to prevent Jimmy from accomplishing his mission. Jimmy eventually is successful, but Vumania turns out to be a worthless island. The crooks are using it as a hide-out which is why they interferred with Jimmy.