
The Potomac River valley serves as a bustling corridor of transportation and defense during the early 1940s, connecting the heavy industry of Pennsylvania with the strategic transport hubs of Maryland. Chambersburg and Hagerstown anchor a landscape defined by an intensive network of iron and coal infrastructure, notably the Pennsylvania RR and the Western Maryland RR. To the south, the Cumbo Freight Yard and Williamsport Sta highlight the region's importance as a logistics center, while the Chesapeake and Ohio Canal traces the riverbank, a reminder of earlier water-borne commerce.
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1884 · Harpers Ferry
USGS Topo · 1:125,000
1891 · Harpers Ferry
USGS Topo · 1:125,000
1893 · Frederick
USGS Topo · 1:125,000
1893 · Harpers Ferry
USGS Topo · 1:125,000
1894 · Frederick
USGS Topo · 1:125,000
1894 · Winchester
USGS Topo · 1:125,000
1899 · Hancock
USGS Topo · 1:62,500
1900 · Mercersburg
USGS Topo · 1:62,500
1901 · Hancock
USGS Topo · 1:62,500
1902 · Chambersburg
USGS Topo · 1:62,500