Correspondence with A. J. Youngson, I. G. Ross, Russel Ward, Eugene Kamenka and Paul Bourke, 1980-92 Box 6 Unit ID: 46 Date: 1980-92
Correspondence with Carl Spader, Richard A. Rempel, John G. Slater and David Pears, 1980-83 Box 18 Unit ID: 2 Date: 1980-83
Correspondence with Dr Franz Keil, Dr A. F. Griaznov and Professor J. Claude Pigeut, 1975-92 Box 6 Unit ID: 43 Date: 1975-92
Correspondence with editorial staff of The philosophical review, 1957-66 Box 10 Unit ID: 6 Date: 1957-66