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Subject
- Middle West--Description and travel.[remove]2
- Agriculture--Middle West.1
- Cattle--Health--United States.1
- Coolidge, Calvin, 1872-1933.1
- Coolidge, Grace Goodhue, 1879-1957.1
- Crops--Effect of drought on.1
- Droughts--Middle West.1
- Food supply--United States.1
- Hibbing (Minn.)--Description and travel.1
- Iron industry.1
- Livestock.1
- Mines and mineral resources.1