Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue #91
Published August 1971
Cover Price 0.25 USD
Pages 52
Editing Julius Schwartz

Cover Details

Characters Justice League of America [Superman; The Flash [Barry Allen]; Hal Jordan [Green Lantern]; Hawkman [Katar Hol]; The Atom [Ray Palmer]; Batman (Earth-1)]; Justice Society of America [Superman (Earth-2); The Flash [Jay Garrick]; Green Lantern [Alan Scott]; Hawkman [Carter Hall]; The Atom [Al Pratt]; Robin (Earth-2)] (inset); Robin (Earth-1)
Genre superhero
Pencils Neal Adams
Inks Neal Adams
Notes Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [July 2007]
Reprinted in Crisis on Multiple Earths (DC, 2002 series) #3

22 page Justice League of America story "Earth-- The Monster-Maker!"

Characters Justice League of America [Superman [Clark Kent; Kal-El]; Hawkman [Katar Hol]; Green Lantern [Hal Jordan]; The Atom [Ray Palmer]; The Flash [Barry Allen]; Batman; Black Canary; Green Arrow [Oliver Queen] (all Earth-1)]; Justice Society of America [Superman [Clark Kent; Kal-L]; The Flash [Jay Garrick]; Hawkman [Carter Hall]; The Atom [Al Pratt]; Robin [Dick Grayson]; Green Lantern [Alan Scott] (all Earth-2)]; Robin (Earth-1) (guest star); S-Kyr; A-Rym; Teppy; E-Hes; Solomon Grundy (villain)
Synopsis Three aliens are out on a joyride alongside their symbiotic pets when they lose control of their ship, resulting in one of the aliens being separated from his pet as they travel through the dimensional barrier separating Earths 1 and 2. As the JSA face off vs. the Alien A-Rym, he defeats them, as a result of the adult Robin charging in headstrong. Meanwhile, on Earth-1, as Batman leaves the JLA for another case he's working on, young college-aged Robin faces off alongside the team vs. Teppy, A-Rym's symbiotic pet, with the same actions and consequences. This results in Robin's uniform being torn up. To be continued...
Genre superhero
Script Mike Friedrich
Pencils Dick Dillin
Inks Joe Giella
Letters John Costanza
Notes With the JSA, continued in #92. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007). First and only time both Robins would team up alongside the JLA/JSA teams.
Reprinted in Crisis on Multiple Earths (DC, 2002 series) #3; in Showcase Presents: Robin The Boy Wonder (DC, 2008 series) #1

7 page Knights of the Galaxy story "The Day the World Melted"

Characters Knights of the Galaxy; The Master of Doom (villain)
Genre Science Fiction
Script Robert Kanigher
Pencils Carmine Infantino
Inks Joe Giella
Reprinted from Mystery in Space (DC, 1951 series) #6 (February-March 1952)

8 page Hourman story "The Hour Hourman Died!"

Characters Hourman [Rex Tyler]; Tricky Dick Arnold (villain)
Genre superhero
Script Gardner Fox
Pencils Dick Dillin
Inks Sid Greene
Letters Ben Oda
Notes Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics [May 2008].
Reprinted from Spectre, The (DC, 1967 series) #7 (November-December 1968)