
The Triadelphia Reservoir dominates the northeastern corner of this landscape, created by the Brighton Dam on the Patuxent River. This 1950 survey captures a region of Montgomery County defined by crossroads hamlets and emerging institutional hubs before the heavy suburbanization of the late 20th century. Major intersections like Olney and Ashton are clearly mapped, alongside historic centers such as Brookeville and Sandy Spring.
29 named features on this map. Tap any name to fly to it.
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2 editions found
1892 · Laurel
USGS Topo · 1:62,500
1892 · Ellicott
USGS Topo · 1:62,500
1893 · Frederick
USGS Topo · 1:125,000
1894 · Ellicott
USGS Topo · 1:62,500
1894 · Laurel
USGS Topo · 1:62,500
1894 · Frederick
USGS Topo · 1:125,000
1897 · Laurel
USGS Topo · 1:62,500
1906 · Ellicott
USGS Topo · 1:62,500
1907 · Laurel
USGS Topo · 1:62,500
1908 · Patapsco
USGS Topo · 1:125,000