#OnThisDay in 1961 #MonEl debuted in #Superboy #comics #89 #LarGand #SuperPoweredAmnesiac who #arrivedOnEarthOnAMonday & recalled time on #Krypton with #JorEl leading Superboy to believe he’s #HisOlderBrother (Monday/Mon-El) until his #vulnerabilityToLeadInsteadOfKryptonite proved he was from #Daxam