The Gunpowder Falls river valley anchors this portion of Baltimore County, flowing southeast from the Prettyboy Dam toward the northern reaches of the Loch Raven Reservoir. This modern 2011 survey highlights a landscape where rural heritage and suburban development converge, evidenced by legacy landmarks like the Gunpowder Meetinghouse and the Bluemount Quarry. Significant infrastructure, including the Butler Post Office and Sparks Post Office, serves established communities such as Hereford and Belfast. The conversion of older rail corridors is visible in the Northern Central Trail, which follows the course of the Little Falls. Meanwhile, recreational and social history is represented by clusters like Camp Puh Tok and the Masonic Home of Maryland, reflecting the diverse land use throughout this undulating terrain.
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1892 · Ellicott
USGS Topo · 1:62,500
1894 · Ellicott
USGS Topo · 1:62,500
1894 · Baltimore
USGS Topo · 1:62,500
1899 · Baltimore
USGS Topo · 1:62,500
1900 · Parkton
USGS Topo · 1:62,500
1902 · Parkton
USGS Topo · 1:62,500
1904 · Baltimore
USGS Topo · 1:62,500
1905 · Westminster
USGS Topo · 1:62,500
1906 · Ellicott
USGS Topo · 1:62,500
1908 · Patapsco
USGS Topo · 1:125,000