Letter, 1 June 1871.
Letter, 1 December 1879
Letter, 1 March 1883
Letter, 2 April 1883
Letter, 3 April 1895
Letter, 1 October 1885
Letter, 1 October 1885
Letter, 3 April 1878
Letter, 2 November 1877
Copy of letter, 22 March 1886
Letter, 27 January 1891