Letter, 9 February 1881
Letter, 18 September 1876
Letter, 9 May 1877
Letter, 11 September 1877
Letter, 6 June 1882
Letter, 2 January 1885
Letter, 2 January 1885
Letter, 19 August 1881
Letter, 6 January 1882
Letter, 17 February 1882
Letter, 19 June 1886