The U.S. Census Bureau's history staff is located just outside Washington, DC, in Suitland, MD. The staff's mailing address is:
Delivery by U.S. Post Office:
U.S. Census Bureau
History Staff
4600 Silver Hill Road
Washington, DC 20233
Private carrier address (FedEx, UPS, DHL, and courier):
U.S. Census Bureau
History Staff
4600 Silver Hill Road
Suitland, MD 20746
The History Staff can be reached by telephone at 301-763-1167. You can also e-mail the staff or visit the history website.