Columbia subject headings:
Concord, Battle of, Concord, Mass., 1775.
Massachusetts--History--Revolution, 1775-1783.
United States--History--Revolution, 1775-1783--Causes.
Harvard subject headings:
Concord, Battle of, Concord, Mass., 1775
United States--History--Revolution, 1775-1783--Causes.
Princeton subject headings:
Concord, Battle of, Concord, Mass., 1775.
Massachusetts--History--Revolution, 1775-1783.
United States--History--Revolution, 1775-1783--Causes.