Woodstock 69 Summer Pop Festivals by Joseph J. Sia. Feb. 1970. Scholastic Book Services.
Johnny played Newport Jazz Festival on Sun. July 6, 1969 - JW picture and JW name on ticket.
Johnny played Atlantic City Pop Festival Fri. Aug. 1, 1969 - JW name on ticket.
Johnny played Woodstock Sun, Aug 17, 1969 - JW picture and name on poster.
Encyclopedia of Pop, rock & soul, Irwin Stambler, St. martin's Press 1974.