Letter to Harvey Cushing, August 8, 1821
Letter to Harvey Cushing, June 6, 1920
Letter to Harvey Cushing, April 25, 1920
Letter to Harvey Cushing, May 21, 1920
Letter to Harvey Cushing, October 27, 1920
Letter to Harvey Cushing, November 12, 1920
Letter to Harvey Cushing, April 30, 1920
Letter to Harvey Cushing, September 1, 1921
Letter to Harvey Cushing, September 1, 1921
Letter to Harvey Cushing, February 13, 1921
Letter to Harvey Cushing, May 1, 1921