Historical Marker

Functioning as the Nation's First Proving Ground

Historical marker location:
Navy Yard, District of Columbia
( Marker is on M Street Southeast west of 10th Street Southeast, on the right when traveling east.)

Firepower. Behind These Walls

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