Before and after working for Marvel Comics, Steve Ditko was an artist for Charlton in Derby, Connecticut. In its Atlas days, before returning to superhero comics, Marvel was a step down from National Periodical Publications, aka DC, with Charlton at the low end of the comic book publishing business.
When Atlas nearly collapsed in 1957, Stan Lee kept the company going by using a large stash of previously unpublished inventory stories. But Stan had to lay off his reliable stable of artists who had drawn those inventory stories, including my pal Joe Sinnott. Joe was desperate for work and he found it at Charlton by anonymously penciling thousands of Romance story pages for Vince Colletta.
Ten years later comic books were back in a big way, and Marvel was taking over the top spot from DC. Joe had returned to the Bullpen, but Steve Ditko left for reasons that will never be fully explained. Ditko returned to Charlton, where he drew mystery stories, undoubtedly for a fraction of the page rate that he was earning at Marvel plotting and drawing Spider-Man and Dr. Strange.
One of the ways that Charlton saved money was by not having staffers who were specialists in hand lettering. Instead, Charlton had A. Machine. One of the fixed links I have on this blog is for Charlton Comics: The Movie. The team behind the project have uncovered the secret identity of A. Machine, and they will reveal it in their upcoming documentary.
Bill Mumy was a huge Ditko fan! I follow him on Twitter and he was pretty broken up.