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- Commerce[remove]11
- Description and travel6
- Fur trade4
- Politics and government4
- Social life and customs4
- Coal mines and mining3
- Gold mines and mining3
- Indians of North America3
- Lumber trade3
- Mines and mineral resources3
- Missionaries3
- Voyages and travels3
- Voyages to the Pacific coast3
- History2
- Mosses2
- Plant collecting2
- Shipment of goods2
- Type specimens2
- Agriculture1
- Buildings, structures, etc1
