The Early history of the Pittsburgh Coal bed.
- Creator Personal:
- Eavenson, Howard N. (Howard Nicholas), 1873-1953.
- Title:
- The Early history of the Pittsburgh Coal bed.
- Call Number:
- P1798
- Date:
- 1939
- Description:
- Journal article tearout from: West Pennsylvania historical magazine, v.22:no.3(1939:Sept.)
- Subject Topical:
- Coal mines and mining--Pennsylvania--Pittsburgh.