The National Bowling Association, Inc. TNBA is a non-profit corporation, organized in August 1939, in Detroit, Michigan, for the express purpose of encouraging Blacks to develop their skills in the game of Ten Pins. It was originally known as the "National Negro Bowling Association" because at the time of its birth, Negroes and other Non-Caucasians were not permitted to belong to ABC or WIBC because of certain restrictive clauses in their constitutions.