This encyclopedia covers the history of superheroes and superheroines in America from approximately 1938-2010 in an intentionally inclusive manner. The book features a chronology of important dates in superhero history, five thematic essays covering the overall history of superheroes, and 100 A-Z entries on various superheroes. Complementing the entries are sidebars of important figures or events and a glossary of terms in superhero research. Designed for anyone beginning to research superheroes and superheroines, this title contains a wide variety of facts, figures, and features about caped crusaders and shows their importance in American history. Further, it collects and verifies information that otherwise would require hours of looking through multiple books and websites to find.