World's Finest Comics #78

In "When Superman's Identity Is Exposed," a mysterious threat shakes Metropolis as someone publicly claims to know Clark Kent’s secret and dares Superman to prove he isn’t who he says he is. With the pressure mounting, Superman turns to Batman and Robin for help in uncovering the truth behind the accusations. Written by Edmond Hamilton and illustrated by Dick Sprang, with inks by Stan Kaye and letters by Pat Gordon, this 1955 classic features dynamic art and a tense mystery that keeps readers on edge—cover by Win Mortimer.