On-sale date from ad in Challengers of the Unknown #48 and copyright registration.
Pencilling and inking credits per Julius Schwartz' editorial records. Inking formerly credited to Murphy Anderson and Bernard Sachs. Lettering credit from reprint in JLA Archives.
Story across 24 pages in three chapters of 7.67, 9.67, and 5.67 pages.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Letters credit per Nick Caputo; JLA Archives credits Joe Letterese.
published in cooperation with the National Social Welfare Assembly
letters submitted by Susan Sheridan; Frank Tower; Scott Taylor; Bill Arundale; Bob Butts; Leonard Tirado