#OnThisDay in 1968 #Cain debuted in @dc.com #HouseOfMystery #comics #175 with #hisPetGargoyle #Gregory when the title returns to #HorrorAnthologyFormat 2 issues after #MartianManhunter & #DialHForHero features end #BobHaney #JackSparling #JoeOrlando introduce him as #seriesHost modeled aft #LenWein