Superhero comic books are traditionally thought to have two distinct periods, two major waves of creativity: the Golden Age and the Silver Age. In simple terms, the Golden Age was the birth of the superhero proper out of the pulp novel characters of the early 1930s, and was primarily associated with the DC Comics Group. Superman, Batman, Green Lantern, and Wonder Woman are the most famous creations of this period. In the early 1960s, Marvel Comics...