Pearson, Leonard . "The effect of tuberculosis vaccination upon cattle infected with tuberculosis." Reprinted from the University of Pennsylvania Medical Bulletin, April 1905.

Pearson, Leonard . "The effect of tuberculosis vaccination upon cattle infected with tuberculosis." Reprinted from the University of Pennsylvania Medical Bulletin, April 1905., Box: 4. Veterinary Reprint and Pamphlet Collection, 24-4-3369. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/263110 Accessed December 24, 2025.