#75YearsAgoToday in #DetectiveComics #168 #10YearsAfterHisDebutInBatmanComics @dc.com gifted #TheJoker an #origin when #Batman instructed a #StateUniversityCriminologyCourse & #TheUnsolvedCaseOfTheRedHood reveals how a #MonarchPlayingCardCompany thief became #TheClownPrinceOfCrime #TheJoker85 #DC90