Letter to Harvey Cushing, September 2, 1919
Letter to Harvey Cushing, June 4, 1919
Letter to Harvey Cushing, April 27, 1919
Letter to Harvey Cushing, April 14, 1919
Letter to Harvey Cushing, March 24, 1919
Letter to Harvey Cushing, March 13, 1919
Letter to Harvey Cushing, May 28, 1917
Letter to Harvey Cushing, March 28, 1917
Letter to Harvey Cushing, January 29, 1916
Letter to Harvey Cushing, January 7, 1916