Citation
Unknown. “Front: Sheep owner J.S. Kelly, Helemsville, Montana, and Dr. Wilking, Montana. Each skull represents 13 head of sheep "died winter of '23 and Spring '24 on "Opsata place", Ovando, Montana. 700 head in all died..” Special Collections, USDA National Agricultural Library. Accessed October 12, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/7604.