Autobiography referring to many friends and the APS, Wistar Institute, Johns Hopkins, University of Chicago, and his work on nerves, brain and the rat.

This collection contains correspondence (approximately 150 letters), subject files, and notes on various research projects. The various subject areas include the central nervous systems, brains, and physiologies of many animals. Included are some anatomical drawings.

The collection consists of diaries, 1890-1938, containing brief records of professional work and family events (49 vols.); also autobiography entitled "Memories for my boys," 1930 (B D713m), referring to his childhood and to his professional career and mentioning Franz Boas, William Comstock, Livingston Farrand, William W. Keen, S. Weir Mitchell, Elihu Root, and W. T. Sedgewick and also APS, University of Chicago, Johns Hopkins University, Yale University, and Wistar Institute (1 vol.); also a few miscellaneous papers, 1869-1932, chiefly letters to and from members of his family, and also Poultney Bigelow, Simon Henry Gage, and W. B. Van Ingen; two essays ("The Days of Man" and "A Venetian Night"): genealogical data; verses dedicated to his wife; extracts of letters to supplement his diaries.