Letter to Harvey Cushing, April 14, 1921
Letter to Harvey Cushing, April 16, 1913
Letter to Harvey Cushing, April 16, 1926
Letter to Harvey Cushing, April 16, 1926
Letter to Harvey Cushing, April 17, 1920
Letter to Harvey Cushing, April 19, 1911
Letter to Harvey Cushing, April 19, 1911
Letter to Harvey Cushing, April 2, 1926
Letter to Harvey Cushing, April 2, 1926
Letter to Harvey Cushing, April 20, 1920
Letter to Harvey Cushing, April 20, 1921
Letter to Harvey Cushing, April 20, 1926
Letter to Harvey Cushing, April 20, 1926
Letter to Harvey Cushing, April 21, 1920