[Letter of 1875 December 14]
[Letter of 1873 September 24]
[Letter of July]
[Letter of 1873 April 26]
[Letter: date unknown]
[Letter: date unknown]
[Letter of 1868 May 13]
[Letter of 1873 August 26]
[Letter of 1873 July 1]
[Letter: date unknown]
[Letter of 1867 March 3]
[Letter of 1878 January 7]