Billings, John S. John S. Billings documents and letters in the National Archives. 1861-1895. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 273.
Billings, John S. John S. Billings documents and letters in the National Archives. 1861-1895. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 273. https://findingaids.nlm.nih.gov/repositories/4/resources/276 Accessed March 28, 2024.