#75YearsAgoToday #6yearsAfter debutingOn #AdventuresOfSuperman #radioShow #Kryptonite #redOre #laterGreen & #otherColorVarietals was intro’d in #Superman #comics #61 when faux #swami’s #turbanJewel weakened #TheManOfSteel who then #phantom-traveled to #hisHomePlanet of #Krypton’s past #toSeekAnswers