Letter, 28 May 1888
Letter, 14 June 1889
Letter, 12 January 1885
Letter from H. G. Vennor to B.J. Harrington regarding the Geological Survey of Canada.
Letter from R.H. Gairdner to B.J. Harrington.
Letter from Frank Packard to B.J. Harrington, written from Montreal.
Letter, 2 January 1883
Letter, 1 August 1878
Letter, 4 December 1878
Letter, 1 November 1888