Region
United States
28
Colorado
11
Africa, Southern
9
Southern Africa
8
North America
6
Oregon
6
Alaska
5
California
5
Oklahoma
5
Louisiana
4
Michigan
4
Missouri
4
New Jersey
4
North Carolina
4
West Virginia
4
Georgia
3
Montana
3
New York (State)
3
North Dakota
3
Pennsylvania
3
South Africa
3
Southern States
3
Texas
3
Virginia
3
West (U.S.)
3
Wisconsin
3
Wyoming
3
Arkansas
2
Canada
2
Florida
2
Great Britain
2
Idaho
2
Indochina
2
Iran
2
Kansas
2
Maryland
2
Massachusetts
2
Middle West
2
New Mexico
2
Ohio
2
Peru
2
Sri Lanka
2
Tennessee
2
West United States
2
Africa
1
Africa, East
1
Arizona
1
Botswana
1
British Columbia
1
Ceylon
1
more ...