
The Penobscot River serves as the industrial and transportation corridor for mid-Maine, connecting the urban centers of Bangor and Brewer to the coastal ports of Bucksport and Searsport. This 1985 survey illustrates the region's complex water network, dominated by large inland bodies like Graham Lake, Green Lake, and Pushaw Lake. The presence of the Maine Central Railroad and Bangor & Aroostook Railroad alongside the river highlights the historical reliance on rail for moving timber and paper goods from the interior.
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1900 · Orland
USGS Topo · 1:62,500
1900 · Bucksport
USGS Topo · 1:62,500
1902 · Orono
USGS Topo · 1:62,500
1902 · Bucksport
USGS Topo · 1:62,500
1902 · Bangor
USGS Topo · 1:62,500
1902 · Castine
USGS Topo · 1:62,500
1902 · Cherryfield
USGS Topo · 1:62,500
1904 · Castine
USGS Topo · 1:62,500
1904 · Cherryfield
USGS Topo · 1:62,500
1904 · Mount Desert
USGS Topo · 1:62,500