Copy of letter, 23 February 1881
Copy of letter, 20 February 1882
Copy of letter, 15 April 1882
Copy of letter, 21 April 1882
Copy of letter, 2 April 1884
Copy of letter, 29 October 1884
Copy of letter, 17 April 1887
Memo, 5 December 1887
Copy of letter, 26 November 1888
Letter, 16 April 1887