memorials in the United States References External links Theodore Roosevelt Association , formerly located on island Friends of Theodore Roosevelt Island 1932 establishments in Washington, D.C. 1967 sculptures Artworks in the collection of the National Park Service Roosevelt, Theodore Island George Washington Memorial Parkway Historic American Landscapes Survey in Washington, D.C. Islands of the Potomac River Mason family residences Monuments and memorials in Washington, D.C. National Memorials of the United States Protected areas established in 1932 Protected areas of Washington, D.C. River islands of Washington, D.C. National Park Service areas in Washington, D.C. Monuments and memorials on the National Register of Historic Places in Washington, D.C. Statues of Theodore Roosevelt Northwest (Washington, D.C.)