Correspondence, manuscripts, and other materials relating to the writing and production of The Double Elephant Folio; correspondence, slides, books, notebooks,pamphlets and artwork relating to John James Audubon and his family, and other ornithologists. Also, material concerning Audubon exhibitions, including catalogues, Audubon slides, stamps, and photographs.

Items related to the Cornell University Bear Mascot include letters to Waldemar H. Fries from G. Ervin Kent, Arthur C. Peters, and Emerson Hinchliff; photograph of G. Ervin Kent feeding a bear cub; and a news clipping about Cornell's first live bear mascot, Touchdown.