#50YearsAgoToday #Blackrock debuted in @dc.com #ActionComics #458 when #UnitedBroadcastingCompany #RAndDDirector #DrPeterSilverstone sought to challenge #GalaxyBroadcasting’s #Superman #eyeballGarneringCoverageSuccess by inventing via #RadioAndTVWaves #UBC’s own #SuperPoweredRevenueGeneratingMascot

#OnThisDay in 1976 #Blackrock debuted in #ActionComics #458 #UnitedBroadcastingCo R & D Director #DrPeterSilverstone sought to challenge #GalaxyBroadcasting’s #Superman-coverage #ratings success by inventing #UBC’s own #SuperPoweredRevenueGeneratingMascot via #RadioAndTVWaves @jamesgunn.bsky.social

#OnThisDay in 1976 #Blackrock debuted in #ActionComics #458 #UnitedBroadcastingCo R&D Director #DrPeterSilverstone sought to challenge #GalaxyBroadcasting’s #Superman #eyeballGarneringCoverage success by inventing via #RadioAndTVWaves #UBC’s own #SuperPoweredRevenueGeneratingMascot