Back in the 1940s, there was a comic character called SuperSnipe...
aka "The Kid with the Most Comic Books in America"!
Donning oversized red flannel longjohns and his father's lodge cape, the kid attempted to fight crime and saboteurs (it was World War II), usually with disastrous results...
Despite the wishful thinking of George Marcoux, who both wrote and illustrated this tale from SuperSnipe V1N7 (1943), there was no Doc Savage b-movie (or serial) during the 1940s, though his stable-mate, The Shadow, did get both a serial and several b-movies (plus, of course, his radio show)!
A Doc Savage movie almost got made in the mid-1960s, as detailed HERE.
The Man of Bronze finally made it to the silver screen in 1975...