First Connecticut Lake dominates the northwest corner of this 2021 survey, serving as a primary water source for the headwaters of the Connecticut River. The surrounding landscape in this part of Coos County is defined by steep summits and high ridges, notably Magalloway Mtn and Diamond Ridge, which overlook a complex network of drainage basins. The eastern and southern slopes are drained by the multiple forks of the Dead Diamond River, including the East Branch Dead Diamond River, Middle Br Dead Diamond River, and West Br Dead Diamond River.
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This is the sole edition of this map. No revisions or reprints were ever made.
1925 · Indian Stream
USGS Topo · 1:48,000
1926 · Indian Stream
USGS Topo · 1:62,500
1927 · Indian Stream
USGS Topo · 1:62,500
1927 · Second Lake
USGS Topo · 1:62,500
1930 · Dixville
USGS Topo · 1:62,500
1930 · Errol
USGS Topo · 1:62,500
1932 · Second Lake
USGS Topo · 1:62,500
1933 · Dixville
USGS Topo · 1:62,500
1934 · Dixville
USGS Topo · 1:62,500
1934 · Errol
USGS Topo · 1:62,500