Canada Georgian Bay - Lake Huron Collingwood and its Approaches Surveyed by Staff Commander J. G. Boulton, R. N. Assisted by Messrs. J. W. Stewart and D. C. Campbell, 1888 under the orders of the Government of the Dominion of Canada. ... Magnetic Variation in 1913, increasing about 3' annually. ...
Canada Georgian Bay - Lake Huron Collingwood and its Approaches Surveyed by ...
Georgian Bay Penetanguishene Harbour Surveyed by Lieut. Henry W. Bayfield, R. N. 1822 Magnetic Variation in 1863, increasing 4' annually. -- Georgian Bay Collingwood harbour Surveyed by Mr. Wm. Gibbard, C.E. April 1858 -- Goderich Harbour Surveyed by Mr. F. A. Wise July 1861 Lighthouse, Lat. 49. 45' 0 N. ...
Georgian Bay Penetanguishene Harbour Surveyed by Lieut. Henry W. Bayfield, R. N. ...
Georgian Bay Penetanguishene Harbour Surveyed by Lieut. Henry W. Bayfield, R. N. 1822 -- Georgian Bay Collingwood harbour Surveyed by Mr. Wm. Gibbard, C.E. April 1858 -- Goderich Harbour Surveyed by Mr. F. A. Wise July 1861 Lighthouse, Lat. 49. 45' 0 N. Long 81. 41'. W. from Greenwich (Approximate) ...
Georgian Bay Penetanguishene Harbour Surveyed by Lieut. Henry W. Bayfield, R. N. ...