Twenty Questions was one of the first weekly panel quiz shows on the radio. It was a "panel of experts" show, based on the old animal, vegetable, mineral parlor game. Listeners sent in subjects - famous things and people - for the panel to identify. Churchill's cigar, Huck Finn, and the Empire State Building are examples of easier subjects. The panel would narrow down the possibilities by asking the emcee yes or no questions, no more than twenty of them. "Is it east of the Mississippi?" "Was he a fictional character?" The panel consisted of a guest celebrity, three willing adults, and a...