
The Merrimack River carves a dramatic path through the center of this 1939 survey, defining the industrial and social character of the region as it heads toward the 1940s. Along the river's eastern bend, Tyngs Island and the Vesper Country Club mark a landscape of early 20th-century recreation, while the Boston and Maine RR hugs the western bank, connecting the village of Tyngsboro with the manufacturing hub at North Chelmsford.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Lowell
USGS Topo · 1:62,500
1893 · Lowell
USGS Topo · 1:62,500
1893 · Groton
USGS Topo · 1:62,500
1905 · Manchester
USGS Topo · 1:62,500
1906 · Milford
USGS Topo · 1:62,500
1918 · Lowell
USGS Topo · 1:62,500
1921 · Lowell
USGS Topo · 1:62,500
1931 · Lowell
USGS Topo · 1:48,000
1931 · Groton
USGS Topo · 1:48,000
1935 · Ayer
USGS Topo · 1:24,000