The National Postal Museum is located on the lower level of the historic
City Post Office Building, which was constructed in 1914 and served as the
Washington, D.C., post office from 1914 through 1986. The Postal Museum
opened in 1993. In addition to one of the world's largest collections of
stamps and philatelic materials, the National Postal Museum has postal
history material that pre-dates stamps, vehicles used to transport the
mail, mailboxes and mailbags, postal uniforms and equipment. It is an
unusually interesting museum and one that children will especially enjoy.