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Subject
- Railroads[remove]857
- Administrative and political divisions65
- Roads42
- Railroad land grants19
- Indian reservations17
- Counties15
- Description and travel15
- Canals14
- Military bases14
- Steamboat lines14
- Maps13
- Transportation11
- Land grants9
- Mines and mineral resources8
- Real property8
- Pacific railroads7
- Public lands6
- Cities and towns5
- Explorations and surveys5
- Waterways5
