In early August 1969, two weeks before the mammoth fete in Bethel, N.Y., approximately 20,000 eager spectators came to the Fuller Flatlands on the banks of the lazy Huron River to hear an absolutely astounding lineup of living legends of the blues – B. B. King, Muddy Waters, Howlin’ Wolf, Otis Rush, Magic Sam, Big Mama Thornton, Son House, T-Bone Walker, Lightnin’ Hopkins, and on and on – at the first major blues festival in the United States.