Isle Royale National Park occupies the vast majority of this maritime survey, illustrating the isolated character of the northern archipelago in Lake Superior. The map focus is primarily aquatic, showing the open water south of the main island masses. Only a small portion of land is visible in the upper left corner, where Isle Royale itself appears, providing a critical reference point for the surrounding waters within t63n r37w. This specific location highlights the remote nautical boundaries of Keweenaw County, emphasizing the distance between the island's southern shores and the Michigan mainland. The sparse terrestrial detail reflects the preservation of this wilderness area, where natural topography and shoreline geometry remain the primary features of interest for navigators and researchers of the Great Lakes.
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This is the sole edition of this map. No revisions or reprints were ever made.
1958 · Hancock
USGS Topo · 1:250,000
1960 · Hancock
USGS Topo · 1:250,000
1961 · Hancock
USGS Topo · 1:250,000
1966 · Hancock
USGS Topo · 1:250,000
1985 · Siskiwit Bay
USGS Topo · 1:100,000
1985 · Grand Portage
USGS Topo · 1:100,000
1985 · Feldtmann Ridge
USGS Topo · 1:24,000
1985 · Malone Bay
USGS Topo · 1:24,000
1985 · Sugar Mountain
USGS Topo · 1:24,000
2011 · Feldtmann Ridge
USGS Topo · 1:24,000