Superhero comics have flourished in the United States since their invention in the 1930s. Born in a period of American history wrought with economic depression and war, characters like Superman and Batman stood as beacons of justice during times of uncertainty in our country. During the Golden Age of superhero comics (1938-1950), heroes like Captain Marvel and Superman enjoyed astounding success, selling millions of issues. Over the following decades, superheroes would come in and out of popularity, but always retain their place as an influence on American pop culture. Today these figures enjoy a renaissance, and can be found everywhere from books to movies - which incidentally can be found at the BPL! If you would like to learn more about the history of superhero comics, this link is a great place to start. Here you can find books on comics' Golden and Silver Ages, and much more.