DC Comics
Superman: "Professor Cobalt's Quack Clinic
Jul 1940
Jerry Siegel Gardner Fox Ken Fitch
Paul Lauretta Fred Guardineer Sheldon Moldoff Chad Grothkopf Bernard Baily
Shuster Shop Fred Guardineer Sheldon Moldoff Chad Grothkopf Bernard Baily
Bernard Baily
Wayne Boring
Whitney Ellsworth