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Subject
- Gold discoveries7
- Gold mines and mining7
- Geology4
- Indians of North America4
- Nautical charts4
- Surveys3
- Administrative and political divisions2
- Copper mines and mining2
- Harbors2
- Landowners2
- Mines and mineral resources2
- Real property2
- Discovery and exploration1
- Land grants1
- Mercury mines and mining1
- Mining and mining resources1
- Ocean currents1
- Roads1
- Shipping1
- Shorelines1
