Boonsboro

Historical marker location:

6524 Old National Pike, Boonsboro, Maryland

( Marker is on Old National Pike (Alternate U.S. 40) 1.2 miles east of Gilardi Road, on the right when traveling east.)

Lee's Headquarters. Antietam Campaign 1862.

The Chesapeake Bay is a crucial part of Maryland's history and economy: The Chesapeake Bay is the largest estuary in the United States, and it has played a crucial role in Maryland's history and economy. The bay has been a major source of food, transportation, and recreation for Marylanders for centuries, and it continues to be an important part of the state's culture.