The Who, What or Where Game (1969)

Players are given a category, then secretly bid from $5-$50 of their winnings on their ability to answer one of three questions (Who, What or Where). Easy questions pay even money, harder questions can pay up to 4:1. Only the highest bidder gets to play, and if there's a tie, players tying bid back and forth, and can wager up to their entire stake. The tenth category allows each player to make one final bid up to all their holdings, and the player with the most money after everyone gets a chance to moderate wins.