Historical Marker

The Williams Slave Pen

Historical marker location:
800 Independence Avenue Southwest, Southwest Federal Center, District of Columbia
( Marker is on Independence Avenue Southwest west of 7th Street Southwest, on the right when traveling east.)

The District was originally called "Federal City": The name "Washington, D.C." was not officially adopted until the late 19th century. Before that, the city was referred to as "Federal City" or simply "Washington."
District of Columbia random facts