Special report on the coke manufacture of the Youghiogheny river valley in Fayette and Westmoreland Counties with geological notes of the coal and iron ore beds : from surveys by Charles A. Young - Platt, Franklin 1844-1900; Fulton, John 1826-1916; Pearse, John B. 1842-1914 (Board of Commissioners for the Second Geological Survey, 1876)
Enthält weiterhin: "Analyses of gas issuing from oil wells / by Samuel P. Sadtler" (S.146-160); "The Boyd's Hill gas well at Pittsburgh / by J.P. Lesley" (S.217-237)