Letter to Harvey Cushing, December 5, 1921
Letter to Harvey Cushing, November 29, 1921
Letter to Harvey Cushing, May 11, 1920
Letter to Harvey Cushing, June 21, 1920
Letter to Harvey Cushing, July 29, 1922
Letter to Harvey Cushing, 1899
Letter to Dr. Cushing, February 9, 1899
Letter to Harvey Cushing, December 15, 1921
Letter to Harvey Cushing, August 25, 1920
Letter to Harvey Cushing, August 6, 1920