The Missouri River carves through the landscape at the Montana and North Dakota border, serving as the central geographic feature of this 2020 study. Along its banks, the Fort Union Trading Post National Historic Site preserves a critical point of early trade and encounter, while the nearby Snowden Bridge facilitates modern passage across the water. The settlement of Snowden sits near the confluence of several geological features, including the Snowden Coulee and Riprap Coulee, which drain the surrounding uplands.
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This is the sole edition of this map. No revisions or reprints were ever made.
1909 · Glendive
USGS Topo · 1:250,000
1953 · Williston
USGS Topo · 1:250,000
1953 · Watford City
USGS Topo · 1:250,000
1954 · Glendive
USGS Topo · 1:250,000
1954 · Wolf Point
USGS Topo · 1:250,000
1957 · Glendive
USGS Topo · 1:250,000
1957 · Williston
USGS Topo · 1:250,000
1957 · Watford City
USGS Topo · 1:250,000
1958 · Wolf Point
USGS Topo · 1:250,000
1958 · Glendive
USGS Topo · 1:250,000