Letter, 28 July 1939
Letter, 7 August 1939
Letter, 20 March 1933
Letter, 28 August 1931
Letter, 29 July 1931
Letter to Harvey Cushing
Letter to Harvey Cushing, March 7, 1921
Letter to Harvey Cushing, March 22, 1921
Letter to Harvey Cushing
Letter to Harvey Cushing