Josiah Henson Special Park 11420 Old Georgetown Rd, N Bethesda, MD20852 Josiah Henson Special Park is located on the old Isaac Riley Farm in North Bethesda. The site is historically relevant…More due to the fact that it is where the Reverend Josiah Henson lived and worked as a slave from 1795 to 1830. This park is a historic resource of the town because Henson's 1849 autobiography inspired Harriet Beecher Stowe's landmark novel, Uncle Tom's Cabin. The park offers special events throughout the year, including guided tours of the park, historical tours, and spoken work poetry events among others. Call for more information about the park or read online about the historical significance of the site.