BATMAN (1940) #107

« The Grown-Up Boy Wonder » When Bruce Wayne and Dick Grayson examine a box which Superman found floating in outer space and left with them until he returned from a current mission, Dick accidentally causes it to open and spew forth a gas that ages him to a young adult. The two are unsure of what to do in Superman’s absence, but the Bat-signal draws Batman away to a jewel robbery in Gotham being committed by the Daredevils, ex-acrobats turned to crime. Batman vetoes Dick coming along as a second Batman, saying that he has a lot of mental growth to do yet.…