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Hampden Falls, now known as Round Falls, was once part of a dam servicing Rock Mill. Completed in the early nineteenth century and rebuilt several times, it became a popular subject for local…

Mt. Washington Mill—historically Washington Mill, part of Washington Cotton Manufacturing Company—is one of Maryland’s earliest purpose-built cotton mills. In the early nineteenth century, the…

Originally known as Druid Mill, Union Mill was built between 1865 and 1872. At the time, it was the largest cotton duck mill in the United States. A unique feature of the mill's construction is the…

Mill No. 1 sits on the site of Laurel Mill, a late 18th-century flour mill originally owned by prominent businessman and abolitionist Elisha Tyson. In 1849, the newly chartered Mount Vernon Company…