Letter to Harvey Cushing, September 7, 1907
Letter to Harvey Cushing, September 27, 1921
Letter to Harvey Cushing, September 23, 1921
Letter to Harvey Cushing, September 1921
Letter to Harvey Cushing, September 17, 1925
Letter to Harvey Cushing, September 17, 1925
Letter to Harvey Cushing, September 1, 1925
Letter to Harvey Cushing, September 1, 1925
Letter to Harvey Cushing, November 24, 1924
Letter to Harvey Cushing, May 9, 1925
Letter to Harvey Cushing, May 9, 1925
Letter to Harvey Cushing, May 27, 1925
Letter to Harvey Cushing, May 27, 1925
Letter to Harvey Cushing, May 24, 1920