Letter to Flexner, April 24, 1917
Letter to Charles Ferdinand Martin, July 15, 1904
Letter to Charles Ferdinand Martin, September 28, 1904
Letter to C.N.B. Camac, August 14, 1904
Letter to Grace Revere Osler, May 9, 1913
Letter to Harvey Cushing
Letter to Harvey Cushing
Letter to Harvey Cushing,
Letter to Harvey Cushing,
Letter to Harvey Cushing, April 21, 1926
Letter to Harvey Cushing, April 21, 1926
Letter to Harvey Cushing, April 30, 1925
Letter to Harvey Cushing, April 30, 1925