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Subject (Region)
- Great Lakes[remove]158
- District of Columbia75
- Mississippi River72
- Washington Aqueduct (District of Columbia)63
- Hawaii Territory (1898-1959)48
- Philippines44
- Puerto Rico43
- Canada40
- Alaska, Department and District of (1867-1912)38
- Tutuila, American Samoa37
- Guam36
- Washington Monument29
- Cuba27
- Midway Islands23
- Alaska Territory (1912-1959)21
- White House21
- Panama18
- United States18
- Niagara Falls16
- California15