Crossword clues for Late-night pioneer 4 lettersAnswerCluePAARPioneering late-night host JackPAARPioneering late-night talkerPAARJack who pioneered late-night talkPAARLate-night pioneerPAAREarly late-night pioneerPAARLate-night pioneer from Canton, OhioPAARLate-night TV pioneer JackPAARLate-night talk pioneer JackPAARPioneer in late-night TVPAARPioneer of late-night talk showsPAARLate-night TV pioneerCARSONLate-night pioneer Johnny