Region
Southwest, New
3
Colorado
2
Arctic regions
1
California
1
Cape Cod National Seashore
1
Cape Cod National Seashore (Mass.)
1
Charles County
1
Charles County (Md.)
1
Dolores County
1
Dolores County (Colo.)
1
Fresno County
1
Indian Neck Ossuary (Mass.)
1
Maryland
1
Massachusetts
1
Mesa Verde National Park (Colo.)
1
Mexico
1
Northwest Territories
1
Southern States
1
United States
1