Search for: Title Author Subject Series Call number that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Oil and gas leases -- Pennsylvania -- Williamsport. 1 Oil and gas leases -- United States 2 Oil Creek State Park (Pa.) -- Description and travel. 1 Oil fields -- Oklahoma -- Tulsa -- Drama. 1 Oil fields -- Texas -- Fiction. 1 Oil industries -- SEE ALSO: Petroleum industry and trade 1 Oil industries -- Corrupt practices -- United States. 1 Oil industries -- Fiction. 2 Oil industry workers -- Great Britain -- Social conditions. 1 Oil industry workers -- North Dakota -- Fort Berthold Indian Reservation. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >