He was also the creator of Plastic Man, a comic book series in the 1940s, and sold cartoons to magazines including Boy's Life, Colliers, and Judge.However, his favorite was what he called his girl and gag cartoons", single panels of pin-ups. . . .his ability to render the female form was already without peer.He signed many of his works, Jake Cole.Source:Christie's New York, 12/17/2003, Playboy