Dewees, John H. creator Ashburner, Charles Albert 1854-1889 Platt, Franklin 1844-1900 Sanders, Richard H. 1851- Chance, H. M. (Henry Martyn) 1856-1937 text pau Harrisburg Published by the Board of Commissioners for the Second Geological Survey 1878 monographic eng

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Fxlix, F305 p. front., illus., plates (Part fold.) charts (part fold.) diagrs. 23 cm. Appendices: A. Section of the Palœozoic rocks in Blair county, by F. Platt and R.H. Sanders.--B. A measured section of the Palæozic rocks between Lock Haven and Farrandsville, by H.M. Chance.--C. Catalog of specimens collected by Mr. Ashburner.--D. Railway and other levels above tide mentioned in this report. by John H. Dewees, with a report of the Aughwick Valley and East Broad Top district, by C. A. Ashburner. At head of title: Geological survey of Pennsylvania, 1874-75. Charts and diagrams partly in pockets. Geology Pennsylvania QE157 .A16 vol. F gs 07000714 DLC 730913 20260227111306.0 gs 07000714