Batman Battles the Living Beast-Bomb! - Detective Comics 339 (May 1965)
Wonder Woman -- Gorilla! - Wonder Woman 170 (May 1967)
The Reign of the Super-Gorilla! - Flash 127 (March 1962)
Titano the Super-Ape! - Superman 138 (July 1960)
None were reprinted in other comics of the sixties and seventies although two, the Batman and Flash stories, are reprinted in the Archives series.
The best gorilla comic artist was Carmine Infantino, viz. the original cover for the Flash story.
DC Special 16 - Spring 1975