#OnThisDay in 1938 #ActionComics #1 debuted #Superman #Zatara #TexThompson & other #ActionHeroes later #Vigilante & hosts #CongoBill #TommyTomorrow #Supergirl introduces #Vixen in 1981 turns #ActionComicsWeekly in #theLate80s w rotating features #GreenLantern #BlackCanary #WildDog & #SecretSix