Region
Alaska
1
America
1
Art
1
Australia
1
California
1
Canada
1
Central America
1
China
1
Dallas
1
Earth (Planet)
1
Egypt
1
Gettysburg National Military Park (Pa.)
1
Great Plains
1
Greece
3
Hawaii
1
India
1
Iraq
1
Italy
1
Japan
1
Klondike River Valley (Yukon)
1
Mexico
2
Middle West
1
North America
1
Northeastern States
1
Rome
2
Southern States (U.S.)
1
Southwest (U.S.)
1
Spain
1
Study and teaching (Elementary)
2
Tennessee
10
Texas
1
United States
56
West (U.S.)
3