Comic Title: Superman #145
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: May 1961
On Sale Date: March 16, 1961 Newsstand Date March 16, 1961
Source: House Ad, Action Comics #275, Page 15

Copyright Date March 16, 1961
Source: Library of Congress, Periodicals 1961

Frequency: Monthly, with the exception of March, June, Sept., and Dec.
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The Night of March 31st"
Pages: 8

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

Writer: Jerry Siegel
Penciller: Curt Swan
Inker: Sheldon Moldoff

Reprinted In:
Adventure Comics #339 (1965)
Greatest Superman Stories Ever Told HC (1988)
Greatest Superman Stories Ever Told TPB (1989)
Showcase Presents Superman Vol. 2 TPB (2006)

Feature Character(s)

• Superman (imaginary appearance)

Supporting Character(s)

• Lois Lane (imaginary appearance)
• Jimmy Olsen (imaginary appearance)
• Perry White (imaginary appearance)
• Lana Lang (imaginary appearance)
• Lori Lemaris (imaginary appearance)

Villain(s)

• Mr. Mxyzptlk (imaginary appearance)
• Bizarro (imaginary appearance)
• Lex Luthor (imaginary appearance)
• Brainiac (imaginary appearance)

Guest Appearance(s)

• Supergirl (imaginary appearance)
• Krypto (imaginary appearance)
• Streaky (imaginary appearance)

Comments:
This story takes place outside normal DC continuity and was designed as an April Fool’s Day joke. It includes a text piece at the end of the story encouraging readers to list the errors found in this story and mail them in to DC. Whichever reader spots the most errors was to have been awarded a prize.

Synopsis:
Superman goes to bed on the night of March 31st. He is awakened by a phone call from Perry White the next morning. When he arrives at the office, Perry looks like a Bizarro. This is only the beginning of strange occurances this day.

Lori Lemaris has legs instead of a tail, Supergirl reveals herself to the world, Krypto makes Jimmy his master, Streaky makes Lois his master, and the two animals chase each other around the Daily Planet office. Lois Lane is dating Mr. Mxyzptlk who willingly sends himself back to the 5th dimension. Lana Lang sells ice cream and attempts to kill Superman. He is then rescued by three of his most hated foes, each of whom knows his secret identity.