State Department, Washington, D.C..
Model Room, Patent Office, Washington, D.C.
Model Room of Patent Office, Washington, D.C.
U.S. Patent Office,(South)
Washington, the Patent Office.
New Wing, Patent Office, Washington, D.C., U.S.A.
Patent Office Court Yard, Washington, D.C.
Patent Office, Washington, D.C.
Washington, D.C., Patent Office.
U.S. Patent Office, Washington, D.C.
U.S. Patent Office, Washington, D.C.
U.S. Patent Office, Washington, D.C..
New Wing, Patent Office, Washington, D.C., U.S.A.
Interior of Patent Office, Washington, D.C., U.S.A.
Interior of Patent Office, Washington, D.C..
Model Room, in the U.S. Patent Office.
U.S. Patent Office, Washington, D.C..
U.S. Patent Office, Washington, D.C..