Many DC Alumni Association events are held at the Paul Greenberg House, located in the Woodley Park neighborhood of Northwest Washington. Parking is available across the street for $4/after 5pm. The Greenberg House is also accessible from the Woodley Park/Zoo Metro stop on the Red Line.
Here's how to contact Greenberg House:
Paul Greenberg House
2301 Calvert St., NW
Washington, DC 20008-2644
On the Web: http://greenberghouse.syr.edu