For the last 40 years, DC Comics' Justice League of America has united the most powerful superheroes -- Superman, Batman, Wonder Woman, The Flash, Aquaman, and Green Lantern -- against some of the most diabolical villains in comic book history. The Ultimate Visual Guide tells the history of the Justice League of America; their epic battles against awesome adversaries such as The White Martians, The Key, and Megaddon; and includes specially commissioned, spectacularly detailed artwork revealing JLA's brand-new headquarters on the moon, Wonder Woman's island home, Aquaman's undersea base, and more.