The two hardcover books that celebrated the 80th anniversaries of Superman and Batman are packaged together in a slipcase set!ACTION COMICS: 80 YEARS OF SUPERMAN and DETECTIVE COMICS: 80 YEARS OF BATMAN, the two hardcovers celebrating the histories of Superman and Batman, are offered together in a new slipcase! Curated by editor Paul Levitz, these books feature reprints of the origins of both heroes, as well as their top allies and foes. Also included are lost tales from the past and new stories, all published here for the first time. These books include some of the best and most historic stories from both series since their beginnings in the late 1930s.