Letter, 2 April 1883
Letter, 4 June 1885
Letter, 4 June 1885
Letter, 8 January 1896
Letter, 19 February 1895
Letter, 21 March 1897
Letter, 4 November 1890
Letter from R.W. Ells to B.J. Harrington, written from Ottawa. Written on Geological & Natural History Survey letterhead.
Letter, 4 June 1896
Letter, 5 October 1900
Letter, 19 July 1897