Region
Pennsylvania
24
United States
21
North America
19
Delaware
18
New Jersey
11
Amérique du Nord
9
America
7
Ohio
7
Delaware River Valley (N.Y.-Del. and N.J.)
6
New Castle County
5
New Castle County (Del.)
5
New York (State)
5
Virginia
5
Arkansas
4
Northeastern States
4
Southwest, New
4
Colorado
3
Dover
3
États-Unis
3
Georgia
3
Kent Co
3
Kentucky
3
Louisiana
3
Mesa Verde National Park
3
Mesa Verde National Park (Col.)
3
Mesa Verde National Park (Colo.)
3
Mississippi River Valley
3
New Castle Co
3
Philadelphia
3
Philadelphia (Pa.)
3
Susquehanna River Valley
3
Alabama
2
Berks County
2
Berks County (Pa.)
2
Canada
2
Chaunis Temoatan
2
Christiana
2
Great Lakes Region (North America)
2
Illinois
2
Kansas
2
Lewden Green Site (Christiana, Del.)
2
Louisiane
2
Mississippi River
2
New England
2
Nordamerika
2
Northwest Coast of North America
2
Ohio River Valley
2
Scarborough Road (Dover, Del.)
2
South America
2
Southern States
2
more ...