#OnThisDay in 1964 #CompositeSuperman debuted in #WorldsFinestComics #142 #JoeMeach takes #Superman’s #SupermanMuseumJanitor jobOffer but resentfullyRages near a display of #TheLegionOfSuperHeroes #duringALightningStorm & #gainsAllTheirPowers #allowingHimToDeciphersSupermanAndBatmansSecretIdentities