John Brown Farm, Tannery & Museum

John Brown Farm, Tannery & Museum, 17620 John Brown Rd., Guys Mills, PA 16327, is a historic archaeological site located in Richmond Township, Crawford County, Pennsylvania. The tannery was built in 1825 by famed abolitionist John Brown (1800–1859), who lived on the site from 1825 to 1835. The tannery was about 0.25 miles from the new Pennsylvania and Ohio Canal.

The tannery was a major stop on the Underground Railway; Brown helped some 2,500 slaves during this period. The site includes the ruins of the tannery, a one-story, rectangular structure measuring 55 by 22 feet. There was a hidden, well-ventilated room in the barn for the fugitive slaves.

In 1874, in "a wonderful state of preservation", it was converted into a cheese factory, and in 1884 it was turned into a steam grist-mill. "The structure is a relic of great historic interest, and is visited by thousands of curiosity and relic seekers, The windows and doors have all been chipped away. The Brown family have visited their old home several times within the past few years."

A fire destroyed the building in 1907. On John Brown's birthday, May 9, the site hosts a community celebration, "Spirit of Freedom".

It was added to the National Register of Historic Places in 1978.

The graves of Brown's first wife Dianthe, their four-year-old son Frederick (another son was named Frederick later), and an unnamed newborn son are nearby.