* Depths shown by soundings. Relief shown by hachures.
<ul><li>Scale [ca. 1:225,000] (W 79°57ʹ--W 75°56ʹ/N 44°21ʹ--N 43°06ʹ)</li></ul><ul><li>Mapping the Nation (NEH grant, 2015-2018)</li></ul>
s.n.
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