#onThisDay in 1962 #AdventureComics #305 #1000YearsInTheFuture after he 1st arrived on earth & met #Superboy #MonEl exited #thePhantomZone & petitioned for #LegionOfSuperHeroes membership disguised as #MarvelLad & #joinedTheTeam after he’s revealed cured of #Daxam #vulnerabilityToLead by #Brainiac5