Letter to Francis John Shepherd, December 25, 1905
Letter to Henry Vining Ogden, November 21, 1900
Letter to Charles W. Eliot, December 19, 1902
Letter to Leonard L. Mackall, December 6, 1910
Letter to John George Adami, October 19, 1904
Letter to Francis R. Packard, November 9, 1901
Letter to Sigmund Adolphus Knopf, May 23, 1910
Letter to William Sydney Thayer, June 22, 1911
Letter to John H. Musser, November 20, 1900
Letter to Francis R. Packard, November 7, 1901