Subjects
- Labor organization. SEE ALSO Coal mining - labor1
- Labor unions4
- Land - Plats and surveys.1
- Land - deeds and grants.1
- Land records and papers.1
- Leases - Oil and gas.1
- Ledgers (account books)1
- Legislation - United States.1
- Local/Regional History and Appalachian South19
- Locks (Hydraulic engineering)1
- Lumber industry and timber.1