#onThisDay in 1975 #PowerGirl debuted in @DC.com #AllStarComics #58 #Earth2 #SupermansCousin #inASingleBound steps into #TheSuperSquad nee #TheJusticeSocietyOfAmerica via #WallyWood #RicEstrada i.e. #LittleAnnieFannyFromKrypton but with #BenGrimm’s haymaker & attitude gets 3 issue #Showcase run ‘77