Ernst, Harold C. "Progress of Medicine." An oration delivered before the Norfolf District Medical Socity at the Celebratin of the Semi-Centennial of its organization, 8 May 1900.

Ernst, Harold C. "Progress of Medicine." An oration delivered before the Norfolf District Medical Socity at the Celebratin of the Semi-Centennial of its organization, 8 May 1900., 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/262491 Accessed December 24, 2025.