Thunder Bay, Lake Superior / prepared under the direction of Colonel G.J. Lydecker, Corps of Engineers, U.S. Army, in 1906
Map Creator
U.S. Lake Survey
Date Original
1906
Description
This map shows railroads, rivers, bays, channels, shoreline and hydrography around Thunder Bay, Ontario. Depths are shown by soundings, isolines, and tints. Relief is shown by hachures and spot heights. Also includes notes on authorities, soundings, and comparative elevations of water levels. Manuscript annotation shows correct name of Trowbridge Island.
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