John P.C. Peter, a great-grandson of Martha Washington, made the quarry into a commercial success by utilizing the C&O and winning the bid to supply red sandstone for the Smithsonian Castle, constructed 1847-1855.
John P.C. Peter, a great-grandson of Martha Washington, made the quarry into a commercial success by utilizing the C&O and winning the bid to supply red sandstone for the Smithsonian Castle. Seneca Quarry most famously provided red sandstone for the Smithsonian Castle on the National Mall, constructed 1847-1855.