
The Patapsco River carves a deep, winding valley through the center of this 1940s landscape, serving as the historical boundary between Baltimore County and Howard County. Along its banks, the industrial and educational character of the region is evident, from the heavy concentration of rail infrastructure at Ellicott City to the prominent campuses of Woodstock College and St Marys College. The Baltimore and Ohio railroad tracks follow the river's tight bends, passing through mill towns like Alberton and Oella, which were vital hubs of early Maryland industry.
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1892 · Laurel
USGS Topo · 1:62,500
1892 · Ellicott
USGS Topo · 1:62,500
1894 · Ellicott
USGS Topo · 1:62,500
1894 · Laurel
USGS Topo · 1:62,500
1894 · Baltimore
USGS Topo · 1:62,500
1894 · Relay
USGS Topo · 1:62,500
1897 · Laurel
USGS Topo · 1:62,500
1899 · Baltimore
USGS Topo · 1:62,500
1904 · Baltimore
USGS Topo · 1:62,500
1906 · Ellicott
USGS Topo · 1:62,500