At left, John Coburn's gaming house. Coburn served as treasurer of the New England Freedom Association, an organization that helped people escape from slavery. In 1851, Coburn was arrested (along with John J. Smith and others) for the courthouse rescue of Shadrach Minkins, a slave who was caught in Boston by federal slave catchers. Coburn was acquitted, and he went on to be the co-founder and captain of the Massasoit Guards, a black military company that was a precursor to the 54th Regiment. In the 1850s, according to the museum, Coburn established a gaming house at his home. A small gold plate outside the door reads "Coburn's Gaming House, c.1843."