Letter to William Osler, February 20, 1900
Letter to Edward A. Sharpey Schäfer, February 21, 1900
Letter to William Osler, February 10, 1900
Letter to William Osler, February 6, 1900
Letter to Harvey Cushing, August 10, 1921
Letter to William Osler
Letter to William Osler
Letter to William Osler
Letter to Harvey Cushing
Letter, 28 March 1893