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Subjects
- Copper mining.[remove]2
- Ships -- Great Lakes.2
- Aerial photography.1
- Airplanes.1
- American newspapers -- Michigan -- Detroit.1
- Archaeological sites.1
- Boats.1
- Camping.1
- Detroit news.1
- Expeditions and surveys.1
- Fishermen.1
- Fishing -- Michigan -- Isle Royale.1
- Forest fires -- Michigan -- Isle Royale.1
- Forests.1
- Indians of North America.1
- Iron industry.1
- Laborers.1
- Lighthouses -- Michigan.1
- Marine accidents.1
- Mining.1