In this series, acclaimed comics scholar Dr. Julian Darius argues that the DC Universe is old enough to have produced a canon of classic stories. Here, he analyzes this canon as it pertains to the Justice League and DC's universe-wide crossovers. Since 1940, DC Comics has been bringing its heroes together, first as the Justice Society, then (beginning in 1960) as the Justice League, and finally (beginning in 1985) in universe-wide crossovers. Shared...