Collection of William Temple Hornaday's notes and correspondence, chiefly relating to his travels, his publications, and his collecting of wild animals. Includes lists of Hornaday's expenses and animals collected on an expedition to Borneo in 1878 for Henry A. Ward, with addendum dated 1933; correspondence from Albert N. Theobald, Charles Theobald, and Wm. Theobald of the Theobald Brothers firm of taxidermists in Mysore, south India (1906-1919); letters from Norman W. Mumford of Boston, Mass. (1920), G.W. Beardsley of the Evening Herald Co., Binghamton, N.Y. (1909), and Mortimer Osborne Bigelow, Capt. 8th U.S. Cavalry, Fort Huachuca, Arizona (1909), and a letter from Hornaday and his wife Josephine to Wm. Sarre[?] (1934).