Sheet 111 - Butt of Lewis. Ordnance Survey of Scotland. Engraved at the Ordnance Survey, Southampton. Surveyed in 1849-52 and published by Colonel H. James, F.R.S., M.R.I.A., R.E., Director General,1858. Revised in 1895 and published by Colonel J. Farquharson, C.B.R.E., Director General, 1897. Edward Stanford, London Agency for Ordnance Maps ...(to accompany) Ordnance Survey of Scotland: Scale 1 inch to a mile. Volume III.
