Mary Ann Furnace Historic District

Mary Ann Furnace Historic District
U.S. National Register of Historic Places
U.S. Historic district
Mary Ann Furnace Historic District in Longswamp Township, Pennsylvania
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Location	Centennial Road southeast of Longswamp, Longswamp Township, Pennsylvania
Coordinates	40°29′5″N75°38′54″W / 40.48472°N 75.64833°W / 40.48472; -75.64833
Area	9 acres (3.6 ha)
Built	1789
Architectural style	Iron furnace
MPS	Iron and Steel Resources of Pennsylvania MPS
NRHP reference No.	91001141 [1]
Added to NRHP	September 6, 1991

The Mary Ann Furnace Historic District, also known as Trexler's Furnace, is an historic iron plantation and national historic district located in Longswamp Township in Berks County, Pennsylvania.

It was listed on the National Register of Historic Places in 1991. ^[1]

History and architectural features

This district encompasses five contributing buildings, one contributing site, and one contributing structure. They are the iron furnace stack (1789), a stone and frame bank barn (c. 1830-1860), the manager's house and office (c. 1830-1860), a blacksmith shop (1854), a charcoal house (c. 1850), a stone dam, and a small stone house (c. 1830-1850). The furnace remained in operation until 1869.

The historical district is commemorated by a historical marker that was erected in 1924. Today, it is owned by the Rohrbach family, which continues to keep the property as historical accurate as possible. ^[2]

References

1. "National Register Information System". National Register of Historic Places . National Park Service. July 9, 2010.
2. Diane B. Reed (March 1991). National Register of Historic Places Registration: Pennsylvania MPS Mary Ann Furnace Historic District. National Archives and Records Administration. Retrieved December 9, 2025. (Downloading may be slow.)