@book{25660,
	author = {Pennsylvania.},
	title = {Oil and gas map of southwestern Pennsylvania, 1915.},
	publisher = {W. S. Ray, State Printer,},
	year = {1916.},
	address = {Harrisburg, Pa.,},
	note = {At head of title: Topographic and Geological Survey of Pennsylvania; Richard R. Hice, State Geologist.}
}