Oxon Hill Manor, 6701 Oxon Hill Road, Oxon Hill, Prince George's County, MD
Significance: This notable neo-Georgian country mansion was designed in 1928 by Jules Henri de Sibour for Sumner Welles, career diplomat and Under Secretary of State in the administration of Franklin D. Roosevelt. Essentially unaltered, it expresses a high level of 1920s prosperity.
Survey number: HABS MD-301
Building/structure dates: 1929 Initial Construction
Building/structure dates: 1934 Subsequent Work
National Register of Historic Places NRIS Number: 78003117