Letter to Mrs. John Revere
Letter to Souchon, December 4, 1914
Letter to James Ford Rhodes
Letter to Adelaide E. Proctor
Letter to T. Herbert Warren
Letter to Mrs. Charles Joseph Singer
Letter to James William White
Letter to Simon Flexner, May 3, 1916
Letter to John Lynn Thomas, May 3, 1916
Letter to Francis R. Packard, May 3, 1916