(Levin, Meyer Collection.) | 3 TLS: Apr. 20, 1960; Apr. 4, 1961; Apr. 25, 1964. | (Shattuck, Roger Collection.) | 3 TLS to Roger Shattuck, 1972. | (Levin, Meyer Collection.) | Letter (TLS) undated. | (Abbe, George Collection.) | Postcard. | (Partisan Review Collection.) | Correspondence. | (Fallaci, Oriana collection.) | Letter. | (Cohen, Robert S. Collection. ) | corr.; TS-copy: N. Yamawaki, 'Reflections on the Philosophy of the Social Sciences in the 20th Century; Beyond the Vienna Circle. Critical Rationalism and the Frankfurt School' (13pp.) | (First Corps of Cadets Collection.) | Yankee doings. Boston. Monthly (In envelope). Present: v. 12, no. 3 March, 1931. v. 18, no. 10 Nov. 1937. [R 10] | (Daly, Tyne Collection.) | ANS, n.d. | (Rogoff, Gordon Collection.) | 4 TLS. | |