Lake Huron - North Channel Clapperton I. to Mildram Pt. Surveyed by Staff Commander J. G. Boulton, R. N., assisted by Messrs. W. J. Stewart and D. C. Campbell, 1887-8. under the orders of the Government of the Dominion of Canada. Magnetic Variation in 1889, increasing 4' annually. All bearings ...
Lake Huron - North Channel Clapperton I. to Mildram Pt. Surveyed by ...