Giant G-77. Bridwell editor credit per indicia and letters page. Previous indexer credited Julie Schwartz.
Source for Anderson art credit is “The Justice League Reader” (Gruenwald 1977), published in Amazing World of DC Comics #14. Nick Caputo suspects the info is correct and Swan is the artist, noting Felix Faust's face and the Flash and Batman's poses.
Inker credit per original publication. Previous indexers credited Carmine Infantino and Bernard Sachs.