http://pec.lib.wvu.edu/record/P37041918Discussion of the records of some very deep wells in the Appalachian oil fields of Pennsylvania and West Virginia. Monograph. Van Orstand, C. E. (Charles Edwin), b. 1870.White, I. C. (Israel Charles), 1848-1927.Earth temperature.Geology--Appalachian Region.Petroleum.Borings--West Virginia.Borings--Pennsylvania.14256