Letter to William Osler, July 15, 1915
Letter to William Osler, August 14, 1915
Letter to A. Lawrence Lowell, September 17, 1915
Letter to William Osler, April 1, 1916
Letter to Harvey Cushing, March 22, 1921
Letter to Henry Vining Ogden, August 3, 1892
Letter to Henry Vining Ogden, June 8, 1899
Letter to William Osler, January 23, 1900
Letter to J. William White, 1900
Letter to William Osler, July 6, 1907