Sourced from this site...

https://comicbookhistorians.com/the-infl...of-comic-books/



... a DOC SAVAGE pulp ad, that describes Doc Savage as a "superman" who works to fight crime from his "fortress of solitude".

Also interesting is use in DETECTIVE COMICS 27 of Commissioner Gordon, from a character of the same name in a pulp magazine.
And photos of about 20 of the major comics artists of the Golden Age, most of who continued and became even bigger names
in the Pre-Code and Silver Age.

Others like Julius Schwartz, Otto Binder, Ray Bradbury, Daniel Keyes, Jack Schiff and Mort Weisinger started ouct active in
fandom for pulps, some of whom later worked professionally in the pulps, before switching over to comics.