North American Lakes Lake Superior The Canadian Shore from the Admiralty Survey by Lieut't H. W. Bayfield, r. N., 1823-5 The Coast and Plans of the United States from the United States Government Surveys of 1855-72. ... Magnetic Variation in 1883; Westerly increasing, Easterly decreasing about 4' annually. All bearings ...
North American Lakes Lake Superior The Canadian Shore from the Admiralty Survey ...
Lake Superior. Sheet 2 The Soundings are in Feet -- inset-- Ontonagon Harbour From the United States Survey - 1859 Agate Harbour From the United States Survey 1858 Marquette Harbour From the United States Survey - 1859 -- (From the U. S. Survey of Lake Huron it is inferred that ...
Lake Superior. Sheet 2 The Soundings are in Feet -- inset-- Ontonagon ...