
Passage Island and the northeast tip of Isle Royale stand isolated within the expanse of Lake Superior in this late nineteenth-century maritime survey. Compiled from earlier U.S. Lake Survey data, the map reveals the complex finger-like landforms and sheltered inlets that define this archipelago. Deep-water channels like Rock Harbor and Tobin Harbor are charted alongside treacherous navigation hazards such as Canoe Rocks and Lock Pt..
12 named features on this map. Tap any name to fly to it.
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3 editions found
1958 · Hancock
USGS Topo · 1:250,000
1959 · Fort William
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
1968 · Fort William
USGS Topo · 1:250,000
1985 · Todd Harbor
USGS Topo · 1:100,000
1985 · Siskiwit Bay
USGS Topo · 1:100,000
1985 · Rock Harbor Lodge
USGS Topo · 1:24,000
1985 · Belle Harbor
USGS Topo · 1:24,000