Letter to Roswell P. Park, April 10, 1882
Letter to Henry Vining Ogden, October 25, 1882
Letter to Harvey Cushing, September 2, 1920
Letter to Henry Vining Ogden, May 15, 1882
Letter to Henry Vining Ogden, April 16, 1882
Letter to William Osler, August 1880
Letter to Henry Vining Ogden, November or December, 1879
Letter to Harvey Cushing, July 12, 1921
Letter to Harvey Cushing, May 12, 1920
Letter from William Osler, March 18, 1878