Wedderburn, Alex J. "Report on the extent and character of food and drug adulteration." U. S. Department of Agriculture, Division of Chemistry, Bulletin No. 41, 1894.

Wedderburn, Alex J. "Report on the extent and character of food and drug adulteration." U. S. Department of Agriculture, Division of Chemistry, Bulletin No. 41, 1894., 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/263299 Accessed December 23, 2025.