Subjects
- Geology -- Michigan.1
- Geology -- Minnesota -- Maps.1
- Geology -- United States.1
- Geology.1
- Human beings -- Origin.1
- Law.1
- Logging -- United States -- Maps.1
- Logging railroads -- United States -- Maps.1
- Lumber industry.1
- Meteorology.1
- Mines and mineral resources -- United States.1
- Natural history.1
- Paleontology.1
- Peace -- Societies, etc.1
- Poetry.1
- Reconstruction.1
- Religion and science.1
- Schools -- Michigan.1
- Schools -- Mississippi.1
- Scientific expeditions -- United States.1