Comic Title: World's Finest Comics #257
Publisher: DC (DC Comics Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: Jun/Jul 1979
On Sale Date: March 8, 1979 Newsstand Date March 8, 1979
Source: DC Coming Attractions, #28

Copyright Date March 8, 1979
Source: Library of Congress, Copyright Office 1979

Newsstand Date March 6, 1979
Source: Comic Reader, #166

Newsstand Date March 5, 1979
Source: Daily Planet, Vol. 79 #8
Listed without a date alongside books on sale the week of March 5th

Shipping Date February 13, 1979
Source: DC Coming Attractions, #28

Frequency: Bi-monthly
Cover Price: $1.00
Page Count: 64
Editor: Jack C. Harris

See Also: The Guide to DC Giants

Title: "Time Keeps on Killing"
Pages: 10

Feature(s):
Green Arrow (of Earth-1)

Writer: Paul Kupperberg
Penciller: Jose Delbo
Inker: Frank McLaughlin
Letterer: Shelly Leferman
Colorist: Jerry Serpe

Feature Character(s)

• Green Arrow (last appearance in Green Lantern #118; next appearance in Justice League of America #170)

Villain(s)

• Clock King (last appearance in Justice League of America #5; next appearance in World's Finest Comics #284)