Region
Adams County
1
Adams County (Pa.)
1
America
2
Antietam
1
Baltimore
2
Chesapeake and Delaware Canal (Del. and Md.)
1
Chester County
1
Chester County (Pa.)
1
Conewago Creek Valley (Pa.)
1
Connecticut
1
Conococheague Creek Region (Pa.)
1
Delaware
7
Delaware River Valley
2
Delaware River Valley (N.Y.-Del. and N.J.)
2
Delaware, Vallée de la (N.Y.-Del. et N.J.)
1
Elk Forge
1
Elkton
1
Elkton (Md.)
2
Europe
1
États du Moyen-Atlantique (États-Unis)
1
États-Unis
3
Frontier
1
Garrett County (Md.)
1
Great Britain
1
Maryland
28
Mason-Dixon Line
1
Middle Atlantic States
1
New Jersey
4
New Sweden
2
Ohio
1
Ohio River Valley
1
Ohio, Vallée de l'
1
Pennsylvania
Pennsylvanie
3
Philadelphia
1
Philadelphia (Pa.)
1
Shippensburg (Pa.)
1
Sweden
2
United States
11
Virginia
4
Washington County
1
Washington County (Md.)
1
West Virginia
1
Western Hemisphere
2