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BLS is located in the Postal Square Building (PSB) next to Union Station in Washington, D.C. The PSB address is:

2 Massachusetts Avenue, N.E., Washington, D.C. 20212

The main entrance to BLS is located across First Street, N.E., from Union Station.

Postal Square Building location on Google Maps

Metro/Commuter Train

If you take the Metro, Amtrak, VRE, MARC, etc. to Union Station, exit towards the Amtrak/commuter train exit. You should exit the Metro station on the same level as the turnstiles, then cross First Street and enter the Postal Square Building through the BLS visitor’s entrance (designated on the doors).


No parking is available for visiting researchers at the PSB. However, pay parking is available at Union Station and other nearby garages.


Last Modified Date: September 23, 2016