Letter to Leonard L. Mackall, December 6, 1910
Letter to Sigmund Adolphus Knopf, May 23, 1910
Letter to William Sydney Thayer, June 22, 1911
Letter to Francis John Shepherd, December 3, 1910
Letter to Maude E. Abbott, December 15, 1905
Letter to Casey Albert Wood, June 29, 1912
Letter to Henry Phipps, June 27, 1912
Letter to John Woolman Churchman, December 14, 1905
Letter to A.E. Cowley, 1910
Letter to Charles Daniel Parfitt, June 21, 1911