Letter to Harvey Cushing, November 24, 1924
Letter to Harvey Cushing, July 22, 1921
Letter to Harvey Cushing, April 20, 1921
Letter to Harvey Cushing, July 7, 1921
Letter to Harvey Cushing, March 23, 1921
Letter to Harvey Cushing, September 27, 1921
Letter to Harvey Cushing, September 23, 1921
Letter to Harvey Cushing, April 20, 1920
Letter to Harvey Cushing, June 30, 1920
Letter to Harvey Cushing, June 26, 1920