'60s quizmaster Jack, 4 letters
'70s Concentration host Jack, 4 letters
Jack of game-show lore, 4 letters
Jack who hosted the 1950's game show Dotto, 4 letters
Onetime Concentration host Jack, 4 letters
'60s quizmaster Jack, 4 letters
'70s Concentration host Jack, 4 letters
Jack of game-show lore, 4 letters