Mort Weisinger retired from DC in 1970 and his final issue of Action Comics was issue #392 (September 1970). Murray Boltinoff became the title’s editor until issue #418. Metamorpho was the backup feature in issues #413-418 after which the character had a brief run as the backup in World’s Finest Comics. Julius Schwartz became the editor of the series with issue #419 (December 1972) which also introduced the Human Target by Len Wein and Carmine Infantino in the back-up feature. Green Arrow became a backup feature in #421 and ran through #458, initially rotating with the Human Target and the Atom. Between issues #423 (April 1973) and #424 (June 1973), the series jumped ahead by one month due to DC’s decision to change the cover dates of its publishing line.
A new version of the Toyman was created by Cary Bates and Curt Swan in issue #432 (February 1974). Martin Pasko wrote issue #500 (October 1979) which featured a history of the Superman canon as it existed at the time and was published in the Dollar Comics format.