Description: The National Postal Museum was established by an agreement between the Smithsonian and the United States Postal Service in 1990. However, its extensive collections of stamps and other philatelic materials date back to 1886. The Postal Museum is housed in the lower level of the former Washington City Post Office Building, which was built in 1914. The postcards in this gallery
Description: [view in Spanish][edan-image:id=siris_sic_6874,size=185,left]Alexander Wetmore, ornithologist and avian paleontologist, was the Smithsonian's sixth Secretary (1945-1952). As a young biologist with the U.S. Bureau of Biological Survey, Wetmore conducted extensive fieldwork in Latin America. He spent 1911 in Puerto Rico studying bird life, and later traveled through South