Feb 14, 2018
Stereograph Card: B.W. Kilburn, 6558: New Wing, Patent Office, Washington, D.C., USA (1861)

seen from Netherlands

seen from Malaysia
seen from Taiwan

seen from Netherlands
seen from Germany

seen from Germany

seen from Germany

seen from United States
seen from United States

seen from United Kingdom
seen from Saudi Arabia
seen from Hong Kong SAR China
seen from Italy
seen from United States
seen from United States

seen from Cambodia
seen from Russia
seen from United States
seen from United States

seen from United States
Stereograph Card: B.W. Kilburn, 6558: New Wing, Patent Office, Washington, D.C., USA (1861)
Patent Office of the United States, Bicentennial Token (1991)