American comic book Kane and Bill Finger created Batman, who debuted in "Detective Comics" #27 (1939). The period from the late 1930s through roughly the end of the 1940s is referred to by comic book experts as the Golden Age of comic books. It featured extremely large print-runs, with "Action Comics" and "Captain Marvel" selling over half a million copies a month each; comics provided very popular cheap entertainment during World War II especially among soldiers, but with erratic quality in stories, art, and printing. In the early 1940s over 90 percent of girls and boys from seven to seventeen read comic books.
Comic book the 1930s; which is generally considered the beginning of the comic book that we know today. The Silver Age of comic books is generally considered to date from the first successful revival of the then-dormant superhero form, with the debut of the Flash in "Showcase" #4 (Oct. 1956). The Silver Age lasted through the late 1960s or early 1970s, during which time Marvel Comics revolutionized the medium with such naturalistic superheroes as Stan Lee and Jack Kirby's Fantastic Four and Lee and Steve Ditko's Spider-Man. The demarcation between the Silver Age and the following era, the Bronze Age of Comic