Subjects
- Account books2
- Coal -- Transportation1
- Coal companies - Cabin Creek Consolidated Coal Company.1
- Coal mines and mining1
- Coal mining - Mechanization.1
- Coal mining - coal companies.[remove]4
- Coal mining -- Strikes1
- Coal mining.2
- Diaries and journals.1
- Engineering1
- Gas industry1
- General stores1
- Leffel, James - turbine waterwheel.1
- Petroleum industry and trade1
- Poetry.1