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Subject
- Mines and mineral resources6
- Nautical charts5
- Railroads4
- Geology3
- Navigation3
- Coasts2
- Fills (Earthwork)2
- Harbors2
- History2
- Indians of North America2
- Surveys2
- Administrative and political divisions1
- Aqueducts1
- Buildings1
- Buildings, structures, etc1
- Capture, 18651
- Description and travel1
- Gold mines and mining1
- Gold ores1
- Marshes1
