TEMPORARILY CLOSEDOpen every day (except December 25)
10:00 am to 5:30 pm
Admission is always free!
2 Massachusetts Ave., N.E.
Washington, DC 20002
This is a primary source for 19th century Railway Systems.
This stamp is a primary source because it was used on mail that traveled by train.
What about this stamp? Is it primary or secondary? Explain your answer.