Step into the refurbished lobby of this unusual sandstone and granite post office built in 1933 and experience, through sight and sound, the development of transportation from the days of horse-drawn wagons to sorting mail on trains and buses. Learn about the evolution of letters, envelopes, manuscript postmarks, and special cancellations of rare stamps. Explore the role of the U. S. Postal Service in World War II. Most items are property of the US Postal Service or are on loan from the Smithsonian Institution in Washington, D. C.