The Potomac River corridor serves as the central artery for this part of Frederick County, where the historic crossroads at Point of Rocks meets the water. Settlement patterns here reflect a deep connection to both agriculture and the river, with numerous small communities like Petersville, Rosemont, and the larger center of Brunswick defining the landscape. The inclusion of the Catoctin Creek Aqueduct and Indian Town Landing highlights the historical significance of the waterway as a conduit for transport and trade.
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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
1908 · Middletown
USGS Topo · 1:48,000
1908 · Seneca
USGS Topo · 1:62,500
1908 · Ijamsville
USGS Topo · 1:62,500
1909 · Ijamsville
USGS Topo · 1:62,500
1910 · Antietam
USGS Topo · 1:62,500