Historical Marker

Joseph Henry

Historical marker location:
999 Jefferson Drive Southwest, The National Mall, District of Columbia
( Marker is on Jefferson Drive Southwest east of 12th Street Southwest, on the left when traveling east.)
Marker installed: 1883

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