Salubria was the site of Woodland Era Indian encampments from 1300-1600 A.D., in a region frequently inhabited by the Piscataway-Conoy. In 1687, Colonel John Addison acquired acreage later called Oxon Hill and devoted it to tobacco growing, and during the Revolutionary War John Hanson, one of the Presidents of the Continental Congress, died at Oxon Hill. In 1830, John H. Bayne built a house called Salubria on land carved from Oxon Hill. A prominent doctor, horticulturist, educator, and politician, Bayne trained his slaves to assist in developing innovative methods to grow fresh produce for the nation’s new capital. Following his 1827 marriage, Doctor Bayne constructed a two-story, columned, wood-framed house here, later expanded to include a southward extension with a 5 by 18 foot, one-and-a-half-story structure where he practiced medicine. The slave population at Salubria grew from 3 or 4 in the 1830s to 19 in the 1860 census, and there were three slave houses, though archaeology failed to identify them. One of the slaves was Judah, a 14-year-old girl whose story was one of the most graphic and tragic in Maryland history. Property records and archaeology have identified sites of a greenhouse, dairy, pump house, and farm storage buildings, but none survived, and fire damaged and then destroyed the main house. The site also includes a public memorial dedicated to the emancipation of all enslaved people in Maryland on November 1, 1864.