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Subject
- Administrative and political divisions6
- Discoveries in geography4
- Nautical charts4
- Discovery and exploration3
- Boundaries2
- Geology2
- Indians of North America2
- Land grants2
- Roads2
- Voyages and travels2
- Coasts1
- Counties1
- Mexican War, 1846-18481
- Mines and mineral resources1
- Monterrey, Battle of, Monterrey, Mexico, 18461
- Navigation1
- Oregon question1
- Pacific wagon roads1
- Palo Alto, Battle of, Tex., 18461
- Railroads1
