50 Constitution Ave NE (at Delaware Ave NE), Washington, D.C.
อาคารกลาง · Northeast Washington · 19 คำแนะนำและคำวิจารณ์
DC Preservation League: Built in 1906-09, using the design of architects Carrere & Hasting. The fourth side was built in 1933, also using the design of architect Wyeth & Sullivan.