Report of progress on the brown hematite ore ranges of Lehigh county, [electronic resource] with a description of the mines lying between Emaus, Alburtis and Fogelsville. By Frederick Prime, jr. ...
Imprint
Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1875.
At head of title: Second geological survey of Pennsylvania: 1874.
Reproduction
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.