241. David Thayer Collection: Rare Books and Journals Date: 1870 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
242. Department of Biology and Public Health Format: Photographs Collection: Manuscripts and Archives Date: 1922 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
243. Department of Epidemiology Creator: Harvard T.H. Chan School of Public Health. Office of External Relations Format: Photographs Collection: Manuscripts and Archives Date: 1958 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
244. Department of Microbiology Creator: Harvard T.H. Chan School of Public Health. Office of External Relations Format: Photographs Collection: Manuscripts and Archives Date: 1959 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
245. Document Format: Documents Collection: Arlington Historical Society Collection Date: March 8, 1974 Institution: Arlington Historical Society
246. Don W. Fawcett at the electron microscope Collection: Manuscripts and Archives Date: 1957 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
247. Donald Hopkins Format: Photographs Collection: Manuscripts and Archives Date: 1970 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
248. Dorm Room of George Arthur Cornell, c. 1902 Format: Photographs Collection: College Archives Digital Collections Date: [1900?–1902?] Institution: Springfield College Archives and Special Collections
249. Dr. Augustine and Dr. Vijayawaddhana Creator: Harvard T.H. Chan School of Public Health. Office of External Relations Format: Photographs Collection: Manuscripts and Archives Date: 1954 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
250. Dr. Cannon presenting an honorary award to Dr. Brown Collection: Manuscripts and Archives Date: 1967 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
251. Dr. Frank Parker measuring radioactivity in evaporated water samples in the Department of Sanitary Engineering at the Harvard School of Public Health. Creator: Harvard T.H. Chan School of Public Health. Office of External Relations Format: Photographs Collection: Manuscripts and Archives Date: 1952 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
252. Dr. J. Collins Warren (1842-1927) Format: Photographs Collection: Artwork and Artifacts Date: 1890 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
253. Dr. J. Collins Warren performing an abdominal operation Format: Photographs Collection: Artwork and Artifacts Date: 1889 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
254. Dr. J. Mason Warren (1811-1867) Format: Photographs Collection: Artwork and Artifacts Date: 1860 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
255. Dr. John C. Rock Collection: Manuscripts and Archives Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
256. Dr. John Collins Warren (1778-1856) Format: Photographs Collection: Artwork and Artifacts Date: 1850 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
257. Dr. John Warren (1874-1928) Format: Photographs Collection: Artwork and Artifacts Date: 1921 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
258. Dr. Kazanjian at his graduation from Harvard Dental School Creator: Harvard Dental School Format: Photographs Collection: Manuscripts and Archives Date: 1905 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
259. Dr. Kazanjian Operating Format: Photographs Collection: Manuscripts and Archives Date: 1940–1949 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
260. Dr. Kazanjian Teaching Format: Photographs Collection: Manuscripts and Archives Date: 1940–1949 Institution: Center for the History of Medicine (Francis A. Countway Library of Medicine)
