Beal, F.E.L. "Some common birds: in their relation to agriculture." From the U.S. Department of Agriculture Farmers' Bulletin, No. 54, 1897.

Beal, F.E.L. "Some common birds: in their relation to agriculture." From the U.S. Department of Agriculture Farmers' Bulletin, No. 54, 1897., Box: 1. Veterinary Reprint and Pamphlet Collection, 24-4-3369. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/262320 Accessed December 25, 2025.