Comic Title: Action Comics #314
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: July 1964
On Sale Date: May 28, 1964 Newsstand Date May 28, 1964
Source: House Ad, Superboy #114, Page 22

Newsstand Date May 28, 1964
Source: Newsdealer Magazine, V19 #4

Copyright Date May 28, 1964
Source: Library of Congress, Periodicals 1964

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The Day Superman Became the Flash"
Pages: 14

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

Writer: Edmond Hamilton
Artist: Al Plastino

Reprinted In:
Best of DC #8 (1980)

Feature Character(s)

• Superman (last appearance in Superman's Girl Friend, Lois Lane #50; next appearance in Superman's Pal, Jimmy Olsen #78)

Supporting Character(s)

• Jor-El (in flashback; last appearance in Adventure Comics #313; next appearance in Adventure Comics #323)
• Lara (in flashback; last appearance in Adventure Comics #313; next appearance in Superman #172)

Guest Appearance(s)

• Justice League of America (last appearance in Justice League of America #28; next appearance in Teen Titans #53)
• Batman (last appearance in World's Finest Comics #142; next appearance in Detective Comics #329)
• Flash (last appearance in Justice League of America #28; next appearance in Flash #146)
• Atom (last appearance in Justice League of America #28; next appearance in Atom #14)
• Green Arrow (last appearance in Justice League of America #28; next appearance in Teen Titans #53)
• Aquaman (last appearance in Aquaman #16; next appearance in Teen Titans #53)
• Topo (last appearance in World's Finest Comics #133; next appearance in Superman's Pal, Jimmy Olsen #78)

Other Character(s)

• Zhan-Zar (a Kryptonian scientist; appears in flashback; no further appearances)
• Citizens of planet Xann, Valair, Ntann, Saruun, and Gangor (no appearance)

Synopsis:
The Justice League contacts Superman after Aquaman finds a tape created by Jor-El in the ocean. The tape explains how Jor-El selected Earth as the destination for Kal-El's rocket. A computer simulation showed a prediction of Kal-El's life on several worlds from which Jor-El selected Earth. Ironically, on the other planets, Kal-El would have grown up to resemble Justice League members Atom, Aquaman, Green Arrow, Batman, and the Flash.