Subject
- Coal mines and mining1
- Description and travel1
- Discovery and exploration1
- Early maps1
- Early works to 18001
- Fire, 18961
- Fires1
- Fox hunting1
- GeĢologie1
- Groundwater1
- History1
- Iron mines and mining1
- Land grants1
- Local transit1
- Magnetic declination1
- Maps1
- Military reservations1
- Post office buildings1
- Railroad land grants1
- Real estate development1
