John Payne, in his comprehensive 1798 tome, A New and Complete System of Universal Geography, noted the flouring mills along the Jones Falls near Baltimore. At the time, wealthy abolitionist Elisha Tyson owned two of the ten documented mills: one at…

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 use of locally quarried stone. The other mills…