Many comic book artists and writers contributed to the effort in the early years. These included Stan Lee, Will Eisner, Vaughn Bodé, Frank Kelly Freas, Harvey Kurtzman, Mike Ploog, Basil Wolverton, Marie Severin, Mike Carlin, editor Marv Wolfman and executive editor Roy Thomas. Mainstream writers like Harlan Ellison and Art Buchwald also contributed. Lee Marrs supplied a few pictures. In addition to drawn art, Crazy experimented with fumetti.