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Subjects
- Laborers.2
- Mining.2
- Aerial photography.1
- Airplanes.1
- American newspapers -- Michigan -- Detroit.1
- Archaeological sites.1
- Business enterprises -- Michigan -- Saginaw.1
- Business records.1
- Camping.1
- Conservation of natural resources -- Michigan.1
- Copper mining.1
- Detroit news.1
- Elections -- Michigan -- 1936.1
- Fish.1
- Fishermen.1
- Fishing -- Michigan -- Isle Royale.1
- Fishing -- Michigan.1
- Fishing.1
- Forest fires -- Michigan -- Isle Royale.1
- Forests and forestry -- Michigan.1