English: Shows historic sites, industrial archeological sites, and park planning areas in the 9-county Altoona-Johnstown region. Relief shown by shading. At foot of title: DSC-957-20051-Dec 92. Panel title: Southwestern Pennsylvania Heritage Preservation Commission. Publication services were provided by ... Denver Service Center, National Park Service, NPS D-62, January 1993. Includes text, site index, and ill. Text, ill. (some col.), and mailing-address area on verso. Available also through the Library of Congress Web site as a raster image.; Project-related sites, southwestern Pennsylvania

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