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Glen Arm in Baltimore County, Maryland — The American Northeast (Mid-Atlantic)
 

Gunpowder Copper Works

1804 - 1883

 
 
Gunpowder Copper Works 1804 - 1883 Marker image. Click for full size.
Photographed by Beverly Pfingsten, July 29, 2007
1. Gunpowder Copper Works 1804 - 1883 Marker
Inscription. 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 fabricated here.
 
Erected 1967 by Baltimore County Historical Society.
 
Topics. This historical marker is listed in these topic lists: Industry & CommerceNatural Resources.
 
Location. 39° 25.371′ N, 76° 29.754′ W. Marker is in Glen Arm, Maryland, in Baltimore County. It is on Harford Road (Maryland Route 147) 0.2 miles north of Factory Road, on the right when traveling north. Touch for map. Marker is in this post office area: Glen Arm MD 21057, United States of America. Touch for directions.

Regionally, this marker is in Central Maryland. It is also in the American Mid-Atlantic and in the Chesapeake Bay Region. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.

Other nearby markers. At least 8 other markers are within 3 miles of this marker, measured as the crow flies: Indian Rock (approx. 1.8 miles away); Germantown (approx. 1.9 miles away); The Baltimore Embroidery / The Tanner Homestead (approx. 1.9 miles away); Perry Hall (approx. 2.2 miles away); Merrick Log House (approx. 2.6 miles away); Jenifer Kiln (approx. 2.6 miles away); Risteau Kiln (approx. 2.6 miles away); The Balancing Reservoir (approx. 2.6 miles away).
 
Another marker is no longer nearby.
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The Baltimore and Harford Turnpike Company (was approx. 0.9 miles away but has been confirmed missing).
 
Copper Works Building image. Click for full size.
Photographed by Beverly Pfingsten, July 29, 2007
2. Copper Works Building
Sign on Building image. Click for full size.
Photographed by Beverly Pfingsten, July 29, 2007
3. Sign on Building
Dwelling across from the Copperworks image. Click for full size.
Photographed by Beverly Pfingsten, July 29, 2007
4. Dwelling across from the Copperworks
 
 
Credits. This page was last revised on August 29, 2020. It was originally submitted on July 29, 2007, by Bill Pfingsten of Bel Air, Maryland. This page has been viewed 3,954 times since then and 63 times this year. Last updated on July 1, 2020, by Carl Gordon Moore Jr. of North East, Maryland. Photos:   1, 2, 3, 4. submitted on July 29, 2007, by Bill Pfingsten of Bel Air, Maryland.
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Jun. 19, 2026