Letter to Harvey Cushing, January 7, 1916
Letter to Harvey Cushing, December 7, 1915
Letter to Harvey Cushing, October 1, 1915
Letter to Harvey Cushing, April 22, 1925
Letter to Harvey Cushing, April 22, 1925
Letter to Harvey Cushing, August 30, 1915
Letter to Harvey Cushing, January 6, 1915
Letter to Harvey Cushing, September 2, 1919
Letter to Harvey Cushing, July 1, 1919
Letter to Harvey Cushing, June 4, 1919
Letter to Harvey Cushing, April 27, 1919