The Proctors aquire property and tanneries in Upstate New York and Pennsylvania to help supply boots, saddles and other leather goods to the Union Army during the Civil War. Thomas Proctor eventually takes over the business in its entirety renaming it the Thomas E. Proctor Leather Company. Including the town of Proctor, PA, the company builds roads, railroads, churches, schools and factories throughout Pennsylvania’s “Endless Mountains” region. By linking these tanneries to its warehouses and storefronts in Boston’s “Leather District”, the company eventually grows to be the largest such enterprise in the United States.