Letter to Edward A. Sharpey Schäfer, March 12, 1884
Letter to George Ross, June 10, 1884(?)
Letter to George Ross, June 19, 1884(?)
Letter to Henry Vining Ogden, 1884(?)
Letter to J. Collins Warren, October 1885
Letter to William Raphael, February 7, 1885(?)
Letter to Henry Pickering Bowditch, June 29, 1885
Letter to Henry Vining Ogden, April 1885
Letter to Francis John Shepherd, March 27, 1885
Letter to Francis John Shepherd, May 1885