Report of progress in the Cambria and Somerset district of the bituminous coal-fields of western Pennsylvania
By: by F. and W.G. Platt.
Contributors: Platt, William Greenough.
Series: Report of Progress / Geological survey of Pennsylvania -- HH, HHH; Report of progress (Geological Survey of Pennsylvania) -- H2-H3.
Publisher: Published by the Board of Commissioners for the Second Geological Survey
Published: 1877
Place of publication: Harrisburg
Language: eng
Subjects: Coal mines and mining -- Pennsylvania.; Geology -- Pennsylvania -- Cambria County.; Geology -- Pennsylvania -- Somerset County.
Notes: At head of title: Second geological survey of Pennsylvania: 1875 [1876]

Atlas issued in 1889 includes pamphlet with title: "Revision and correction of the semi-bituminous coal section at Wellersburg in Somerset County, Pa." (a continuation of Report HHH)

Includes index.
Table of contents: value: pt. I. Cambria.; value: Pt. II. Somerset.