Consists primarily of correspondence of the American educator, art critic, and museum director Frank Jewett Mather (1868-1953).

Consists of the final draft of American poet Norman Macleod's unpublished autobiography, Generation of Anger.

Consists of selected papers of George F. Thomas, professor of religious thought (1940-1968) at Princeton.

Consists of selected material by and about Henry De Wolf Smyth, the American physicist and diplomat who figured prominently in the development of atomic energy, the Manhattan Project, and the production of the atomic bomb.

Consists of a Xerox copy of a typed manuscript of "Myself and Others," the unpublished autobiography of Brook, containing many observations on the art world of the 1920s and 1930s.