Sinnott in 1992 recalled his earliest work for Gill being the Western comic "Red Warrior" and later including "Kent Blake of the Secret Service", both for Atlas Comics, a predecessor of Marvel Comics. "Tom would do all of the heads. We'd do everything else. We'd do the backgrounds and the figures, but since they were Tom's accounts, he'd do the heads so it looked like his work. I did this for about nine months. It was great learning," he said, adding, "I can never have enough good to say about Tom Gill. He gave me my start."