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Subject (Region)
- District of Columbia[remove]183
- United States51
- Great Lakes42
- Mississippi River40
- Washington Aqueduct (District of Columbia)36
- Alaska Territory (1912-1959)21
- Great Britain18
- New Mexico Territory (1850-1912)18
- Utah Territory (1850-1896)18
- Arizona Territory (1863-1912)16
- White House16
- Mexico15
- France14
- Yellowstone National Park13
- Alaska, Department and District of (1867-1912)11
- China11
- Spain10
- Indian Territory (1834-1907)9
- Russia (to 1921)9
- Washington Territory (1853-1889)9