Founded by Martin Goodman, who had begun his career in the 1930s with pulp magazines published under a variety of shell companies, Magazine Management served as an early employer of such staff writers as Rona Barrett, Bruce Jay Friedman, David Markson, Mario Puzo, Martin Cruz Smith, Mickey Spillane, and Ernest Tidyman. Subsidiaries of Magazine Management included Humorama, which published digest-sized magazines of girlie cartoons, Marvel Comics, and black-and-white comics magazines such as Vampire Tales, Savage Tales, and Unknown Worlds of Science Fiction.