| (Cohen, Robert S. Collection. ) | | corr.; TS-copy: Z. Zhai, 'Observation and Three Modes of Subjectivity' (13pp.)
| | (Cohen, Robert S. Collection. ) | | corr.; TS-copy: Zhang Huaxia, 'On the Elimination of Metaphysics of the Vienna Circle and the Elimination of Natural Ontologies of the Practical Materialists of China' (9pp.)
| | (Chamberlain, Eva Wagner Collection.) | | Letters. 5 ALS, 1938-1939. | | (Astaire, Adele Collection.) | | To Adele Astaire and Fred Astaire, 1 floral card, 1930. | | (Pease, Deborah Saltonstall Collection.) | | Letter. TLS to George Plimpton, July 14, 1988. | | (Pease, Deborah Saltonstall Collection.) | | Letter. TLS to George Plimpton, July 14, 1988. | | (Alsop, Stewart Collection.) | | Letters, copies of, to Lowell Ponte. | | (De Toledano, Ralph Collection.) | | Letters. | | (King, Martin Luther Jr. Collection. ) | | TLS to MLK, 1 p., with enclosures. | | (Roud, Richard Collection.) | | Letter. TLS with attached photograph, April 18, 1966. | |
