Region
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North America
4
North Carolina
16
Northwest Passage
1
Norway
1
Oakland
1
Okayama-ken
1
Oklahoma
1
Oregon National Historic Trail
1
Outer space
2
Oxford (England)
1
Pacific Area
2
Palestine
1
Paris
1
Paris (France)
3
Pennsylvania
3
Persian Gulf Region
2
Persian Gulf States
2
Peru
1
Philadelphia
1
Philadelphia (Pa.)
3
Philippines
1
Piedmont
1
Plymouth (Mass.)
2
Poland
2
Pologne
1
Polynesia
4
Pompeii (Extinct city)
1
Puerto Rico
2
Pyrenees
1
Québec (Province)
1
Rhode Island
1
Roanoke Colony
1
Rome
11
Rome (Italy)
1
Royal Oak
1
Russia
15
Russia (Federation)
1
Saint Francois County
1
San Bernardino County
1
Sandia Cave
1
Sandia Cave (N.M.)
1
Scandinavia
3
Scotland
9
Serbia
1
Sierra Nevada (Calif. and Nev.)
1
Snake River
1
Snake River (Wyo.-Wash.)
1
South Africa
2
South Asia
1
South Carolina
3
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