Letter to Charles Ferdinand Martin, January 2, 1899
Letter to Charles Ferdinand Martin, July 16, 1902
Letter to Charles Ferdinand Martin, August 1902
Letter to Charles Ferdinand Martin, July 28, 1902
Letter to Charles Ferdinand Martin, March 25, 1902
Letter to Charles Ferdinand Martin, May 8, 1902
Letter to Charles Ferdinand Martin, July 12, 1902
Letter to Charles Ferdinand Martin, October 27, 1903
Letter to Charles Ferdinand Martin, November 7, 1903
Letter to Charles Ferdinand Martin, December 2, 1903