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Open daily 10 a.m. to 5:30 p.m. (Closed December 25)
Admission is always free!
2 Massachusetts Ave., N.E. Washington, DC 20002
The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.
Emitidas en el centenario de México de las primeras estampillas de correo.
Correo censurado enviado vía Lisboa a la Cruz Roja en Ginebra, Suiza, para un interno de la Segunda Guerra Mundial.