ACTION COMICS (1938) #723

Superman, trapped in the frail human body of a teenaged boy, struggles to free himself from a psychiatric institution. Meanwhile, Brainiac revels in his own new body: that of the Man of Steel. Identity Crisis II: Keys Story continued from: Adventures of Superman #536 Story continues in: Superman: The Man of Steel #58 « 1996 27 »–Triangle in upper left hand corner.