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Subject
- Railroads14
- Nautical charts6
- Streets4
- Administrative and political divisions3
- Coasts3
- Railroad land grants3
- Real property3
- Geology2
- Indian reservations2
- Mines and mineral resources2
- Arsenals1
- Canals1
- Discovery and exploration1
- Harbors1
- History1
- Landowners1
- Military bases1
- Navigation1
- Politics and government1
- Public buildings1
