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Subject (Region)
- United States6
- Indian Territory (1834-1907)5
- Utah Territory (1850-1896)5
- Japan4
- Yellowstone National Park4
- Dakota Territory (1861-1889)3
- District of Columbia3
- Germany (to 1949; 1990- )3
- Hot Springs National Park (Arkansas)3
- Austria2
- Canada2
- Chile2
- China2
- Colorado Territory (1861-1876)2
- France2
- Great Britain2
- Guatemala2
- Haiti2
- Italy2
- Liberia2