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Pennsylvania: a Guide to the Keystone State Compiled by Workers of the Writers' Program of the Work Projects Administration in the State of Pennsylvania. Co-sponsored by the Pennsylvania Historical Commission and the University of Pennsylvania

Writers' Program of the Work Projects Administration in the Commonwealth of Pennsylvania

出版	1976
URL	http://books.google.com.hk/books?id=4hQTswEACAAJ&hl=&source=gbs_api