Woods, Charles D. "Poultry investigations at the Maine Agricultural Experiment Station." U.S. Department of Agirculture, Bureau of Animal Industry, Bulletin No. 90, 1906., Box: 5. Veterinary Reprint and Pamphlet Collection, 24-4-3369. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/263362 Accessed April 10, 2026.