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Open daily 10 a.m. to 5:30 p.m.
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.
The Post Office Department prepared a souvenir sheet of six of the Mt. Rainier stamp to sell to stamp collectors at the 1934 stamp show in Atlantic City, New Jersey.