Letter to Harvey Cushing, February 19, 1913
Letter to Harvey Cushing, February 14, 1913
Letter to Harvey Cushing, January 31, 1913
Letter to Harvey Cushing, January 13, 1913
Letter to Harvey Cushing, October 26, 1908
Letter to Harvey Cushing, October 24, 1908
Letter to Harvey Cushing, June 28, 1920
Letter to Harvey Cushing, February 16, 1907
Letter to Harvey Cushing, September 7, 1907
Letter to Harvey Cushing, May 17,1905