Bud Abbott and Lou Costello were a comedy duo seen in movies, on TV, and heard on radio. Their comedy routine "Who's On First?" helped make them a national sensation. The duo started in Vaudeville and by the fall of 1942, Abbott and Costello had their own weekly radio program and topped the popularity polls of Radio Daily and Radio Guide. The Abbott and Costello Show ran for seven years until the summer of 1949. By then filming was completed...