Developing Sustainable Practices

Historical marker location:

1200 Constitution Ave NW, The National Mall, District of Columbia

( Marker is at the intersection of Constitution Avenue Northwest (U.S. 1/50) and 12th Street Northwest on Constitution Avenue Northwest.)

Marker installed: 2019

The District was originally much larger: The District of Columbia originally included land from both Maryland and Virginia, but in 1846, the portion of the District that had been taken from Virginia was returned to the state.