Letter, 23 December 1875
Letter, 16 April 1887
Letter, 4 April 1887
Copy of letter, 13 November 1889
Copy of letter, 14 July 1889
Copy of letter, 26 November 1888
Copy of letter, 20 November 1888
Copy of letter, 11 December 1888
Memo, 5 December 1887
Copy of letter, 17 April 1887