
Conowingo Dam and its expansive Conowingo Reservoir dominate this 1953 landscape, marking a significant era of hydroelectric development on the border of Maryland and Pennsylvania. The map meticulously traces the historic Mason and Dixon Line, which divides the northern settlements of Pleasant Grove and Rock Springs from the Darlington and Berkley areas to the south. This survey captures the infrastructure of the mid-century river economy, featuring the Power Plant, the Pennsylvania Railroad corridor, and station stops like Conowingo Sta and Pilot Sta.
69 named features on this map. Tap any name to fly to it.
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6 editions found
1900 · Havre De Grace
USGS Topo · 1:62,500
1901 · Belair
USGS Topo · 1:62,500
1912 · Quarryville
USGS Topo · 1:62,500
1912 · Mc Calls Ferry
USGS Topo · 1:62,500
1942 · Havre De Grace
USGS Topo · 1:62,500
1942 · Bel Air
USGS Topo · 1:62,500
1943 · Quarryville
USGS Topo · 1:62,500
1943 · Mc Calls Ferry
USGS Topo · 1:62,500
1945 · Bel Air
USGS Topo · 1:62,500
1948 · Baltimore
USGS Topo · 1:250,000