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Subject (Region)
- District of Columbia30
- United States29
- Alaska, Department and District of (1867-1912)18
- Philippines13
- Europe7
- Great Britain7
- Mississippi River7
- Puerto Rico7
- Washington Territory (1853-1889)6
- Arctic Ocean5
- Cuba5
- France5
- Panama Canal (Panama)5
- South Dakota5
- California4
- Hawaii Territory (1898-1959)4
- Mexico4
- New Mexico Territory (1850-1912)4
- Nicaragua Canal (Nicaragua)4
- Spain4