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historicalmarkerproject/markers/HM1VTW_baltimore-and-harford-turnpike-company_Glen-Arm-MD.html
Authorized by the Maryland legislature in 1816 to open a road from Baltimore City with two branches, one through Belle Air to the Susquehanna at Rock Run, and the other to Susquehanna Bridge at McCall's Ferry, Pennsylvania.
historicalmarkerproject/markers/HMRD4_maj-gen-isaac-ridgeway-trimble-c-s-a_Glen-Arm-MD.html
Civil Engineer, graduated West Point 1822. Among engineer officers sent to assist railroad companies, surveyed first route of B&O, 1827. Resigned commission to pursue distinguished railroad career. Enlisted in Confederate Army after Baltimore riot…
historicalmarkerproject/markers/HME7A_gunpowder-copper-works_Glen-Arm-MD.html
Levi Hollingsworth built a mill here to roll and fabricate refined blocks of copper that were shipped to Baltimore from Wales and hauled to the mill by oxcart. The copper used for the roofing of the original dome of the Capitol was rolled and fabr…
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