Schlagwörter
Bethlehem-Mines Corp
2
Bituminous coal--Pennsylvania--Maps
2
Dutch Run
2
Gas wells--Pennsylvania--Maps
2
Grisemore
2
Martintown
2
Mine No. 1
2
Mine No. 12
2
Mine No. 4
2
Mine No. 5
2
Mine No. 6
2
Mine No. 8
2
Mine No. 9
2
Nolo Anticline
2
North Branch Blacklick Creek
2
Oil wells--Pennsylvania--Maps
2
Penna No. 55
2
Pineton
2
Sides Run
2
Teakettle Run
2