Billings, John S. John Shaw Billings Correspondence Collection. 1862-1912. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 449.
Billings, John S. John Shaw Billings Correspondence Collection. 1862-1912. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 449. https://findingaids.nlm.nih.gov/repositories/4/resources/277 Accessed October 02, 2023.
