Subjects
- Farms and farming.2
- Country stores.1
- Diaries and journals.1
- Frontier and pioneer life1
- General stores1
- Mills and mill-work1
- Mining. SEE ALSO Coal mining.1
- Patrons of Husbandry.1
- Petroleum industry and trade1
- Railroads - Allegheny Valley Railroad.1
- Railroads - Chicago, Rock Island, and Pacific Railroad.1
- Rivers and river valleys.1
- Steamboats1
- Surveyors and surveying.1
- Universities and colleges1