Stone began in the comic industry working on Fawcett Comics' Captain Marvel in the early 1940s. He worked for several publishers through the 1940s including Timely Comics and Lev Gleason Publications, but would leave comics to work as an art director for various magazines as well as doing storyboard work for television commercials. Stone returned to comics in the 1960s to ink Jack Kirby's pencils regularly at Marvel Comics on titles such as Fantastic Four, X-Men, and Thor. He also worked at DC Comics pencilling a few Batman stories. In the 1970s and 80s he would work on several titles at Archie Comics on some of their superhero titles as well as their teen humor line of titles.