2603.475, 2603.476, 2603.477, 2603.478, February 20, 1971; February 27, 1972; March 5, 1972; March 19, 1972 Box 14 Series II: Other Talks and Recordings
2603.479; 2603.480; 2603.481, March 26, 1972; April 9, 1972; May 14, 1972 Box 26 Series II: Other Talks and Recordings