Region
United States
36
Great Britain
14
Missouri
9
France
8
Africa
7
Mississippi River
7
India
6
New York (N.Y.)
6
Australia
5
Oceania
5
California
4
Caribbean Area
4
China
4
England
4
Klondike River Valley (Yukon)
4
Pacific Ocean
4
West (U.S.)
4
Cuba
3
Mexico
3
New Mexico
3
South America
3
Southern States
3
Atlantic Ocean Region
2
Central America
2
Earth (Planet)
2
Egypt
2
Ireland
2
Islands of the Pacific
2
Italy
2
London (England)
2
Mars (Planet)
2
Mississippi
2
New York (State)
2
North Dakota
2
Northwest, Old
2
Norway
2
Oregon National Historic Trail
2
Paris (France)
2
Peru
2
Washington (D.C.)
2
Wisconsin
2
Yukon River Valley (Yukon and Alaska)
2
Adventure stories
1
Africa, Southern
1
Alabama
1
Alaska
1
Algeria
1
Antarctica
1
Arctic Ocean
1
Arizona
1
more ...