The American Poultry Historical Society Photographs contain 115 black-and-white and color photographs, with captions and texts, mostly of members of poultry-related institutions and events held by various poultry groups. Some of the institutions, conferences, and groups represented include the American Association of Instructors and Investigators in Poultry; American Feed Manufacturers Association; American Poultry Association; American Poultry and Hatchery Federation; American Poultry School; International Baby Chick Association; Judging and Breeding School; National Poultry Improvement Plan; National Turkey Federation; National Poultry Congress; Northeast Poultry Producers Council; Poultry Science Association; and the World's Poultry Congress.

The Robert L. Hogue Papers relate to Hogue's role on the Participation Committee, U.S.A. Branch of the World's Poultry Science Association, which dealt with the 15th World's Poultry Congress held in New Orleans, Louisiana, in 1974. Files include bulletins published during and following World War II on animal feedstuffs, publications on poultry housing and equipment, newsprint, 16-millimeter films, brochures, photographs, and negatives.

The Romeyn Beck Hough Papers include Hough's journals from 1882 to 1887, 1890 to 1894, and 1898 to 1900. There is also a July 6, 1908, letter to Hough from Melvil Dewey requesting a copy of Hough's book, Handbook of the Trees of the Northern States and Canada, along with an undated statement from Dewey, as president of the American Library Institute, commending Hough's book at a meeting of the Virginia State Library Association.