Knopf, Sigard Adolphus. Sigard Adolphus Knopf Papers. 1879-1940. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 41.
Knopf, Sigard Adolphus. Sigard Adolphus Knopf Papers. 1879-1940. Located in: Modern Manuscripts Collection, History of Medicine Division, National Library of Medicine, Bethesda, MD; MS C 41. https://findingaids.nlm.nih.gov/repositories/4/resources/639 Accessed March 28, 2024.