
Mars Hill Mountain dominates the landscape of this mid-1930s borderland survey, rising above the sprawling agricultural fields of eastern Aroostook County. The international boundary between the United States and Canada is marked by the presence of U.S. Customs stations, highlighting the region's role in cross-border commerce. The local economy is tied closely to the Aroostook River and a network of rail lines, including the Bangor and Aroostook RR and Canadian Pacific RR, which connect settlements like Easton, Westfield, and Mars Hill.
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1929 · Caribou
USGS Topo · 1:48,000
1930 · Fort Fairfield
USGS Topo · 1:48,000
1932 · Caribou
USGS Topo · 1:62,500
1933 · Fort Fairfield
USGS Topo · 1:62,500
1934 · Bridgewater
USGS Topo · 1:48,000
1935 · Howe Brook
USGS Topo · 1:48,000
1935 · Presque Isle
USGS Topo · 1:62,500
1936 · Mars Hill
USGS Topo · 1:48,000
1938 · Bridgewater
USGS Topo · 1:62,500
1939 · Howe Brook
USGS Topo · 1:62,500