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Subject (Region)
- District of Columbia889
- United States195
- Alaska, Department and District of (1867-1912)191
- Puerto Rico189
- Philippines188
- Great Britain183
- Great Lakes158
- Mississippi River143
- Hawaii Territory (1898-1959)141
- France129
- China127
- Canada126
- Europe126
- Canal Zone120
- Mexico113
- Cuba107
- California103
- National Zoological Park96
- New Mexico Territory (1850-1912)95
- Panama Canal (Panama)90