Letter to Whitelaw Reid, December 27, 1910
Letter to Henry Barton Jacobs, December 3, 1901
Letter to Scudder J. Woolley, November 4, 1902
Letter to Thomas Stephen Cullen, December 11, 1900
Letter to Christian A. Herter, November 3, 1902
Letter to Francis R. Packard, November 29, 1901
Letter to W.H. Howell, May 30, 1904
Letter to Henry Vining Ogden, October 24, 1904
Letter to Arnold Carl Klebs, June 25, 1910
Letter to H.C. Yarrow, October 31, 1902