Bedford, Blair, Cambria, Fayette, Fulton, Huntingdon, Indiana, Somerset, and Westmoreland Counties, Pennsylvania United States National Park Service. Denver Service Center. United States Dept. of the Interior. Southwestern Pennsylvania Heritage Preservation Commission. text bibliography cou Denver, Colo.] The Center [1992] 1992 monographic eng

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vi, 74 p. ill., col. maps 28 cm. prepared by National Park Service/Denver Service Center, for the Southwestern Pennsylvania Heritage Preservation Commission, United States Department of the Interior. Shipping list no.: 92-0692-P. "September 1992." "NPS D-44A"--P. [3] of cover. Includes bibliographical references (p. 73). n-us-pa Railroads Pennsylvania History Coal mines and mining Pennsylvania History Steel industry and trade Pennsylvania History Iron industry and Trade Pennsylvania History I 29.2:P 38/3 I 29.2:P 38/3 ocm27242167 GPO 930112 20160527190914.0 128264