http://pec.lib.wvu.edu/record/P149721979The Story of Consolidated Natural Gas Company : innovation, ingenuity and accomplishment.<p> Pamphlet. "Newcomen publication number 1118." "This address … was delivered at the "1979 Pittsburgh Dinner" of the Newcomen Society in North America … on October 25, 1979."</p>Tankersley, G. J.Consolidated Natural Gas Company.14256