Comic Title: Superman #218
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: July 1969
On Sale Date: May 6, 1969 Copyright Date May 6, 1969
Source: Library of Congress, Periodicals 1969

Newsstand Date May 6, 1969
Source: Comic Reader, #73

Frequency: Monthly, with the exception of March and September
Cover Price: $0.15
Page Count: 32
Editor: Mort Weisinger

Title: "The World of Mr. Mxyzptlk"
Pages: 10

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

Writer: Jerry Siegel
Artist: Al Plastino

Reprinted From:
Action Comics #273 (1961)

Feature Character(s)

• Superman (last appearance in Superman's Girl Friend, Lois Lane #23; next appearance in Superman's Pal, Jimmy Olsen #51)

Villain(s)

• Mr. Mxyzptlk (last appearance in World's Finest Comics #113; next appearance in Superman's Pal, Jimmy Olsen #52)

Other Character(s)

• Citizens of the 5th dimension, a Jimmy Olsen robot, several orphans from the Smallville Orphanage, and orphanage headmaster (no further appearances)

Synopsis:
Mr. Mxyzptlk returns to plague Superman who is late for a performance at the Smallville orphanage. Superman gets the imp to say his name backwards, sending him home, but the delay forces him to cancel his performance.

Superman then enters Mxyzptlk’s 5th dimensional world and begins pulling pranks on Mxyzptlk who is running for Mayor. The pranks sabotage Mxyzptlk’s campaign, angering the imp. Mxyzptlk tries to trick Superman into saying his name backwards. When he is finally successful at getting the Man of Steel to say "Namrepus", Superman does not return home.

When it is announced that Mxyzptlk has lost the election, Superman says "Le-Lak", which is Kal-El, his true name backwards. This returns him to Earth, but Mxyzptlk, who did not hear Superman say his name, is left confused.