Region
Alabama
3
Alberta
1
Appalachian Region
1
Arizona
2
Australia
1
Caddo Lake (La. and Tex.)
1
California
8
California, Southern
1
Colorado
2
Delaware River (N.Y.-Del. and N.J.)
1
Everglades (Fla.)
1
Fort Henry
2
Fort Henry (W. Va.)
2
Frontier and pioneer life
1
Indiana
1
Kansas
2
Kentucky
3
Maine
3
Minnesota
2
Mississippi
2
Mississippi River
1
Missouri
1
Montana
2
Nebraska
1
New Mexico
2
New York (State)
4
Northern Territory
1
Northwest, Pacific
1
Ohio
2
Ohio River Valley
3
Oklahoma
1
Oregon
1
Oregon National Historic Trail
1
Ozark Mountains
1
Pennsylvania
1
Rocky Mountains
1
Southern States
4
Southwest, New
1
Southwest, Old
2
Tennessee
4
Texas
1
Texas, South
2
United States
14
United States, West
1
Washington (State)
1
Washington Territory
1
West (U.S.)
9
West Virginia
2
Wisconsin
3