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Report on water resources study of Lancaster County, Pennsylvania. Prepared ...
Economy : a report on the historical development, present characteristics, ...
The past, present, and future population of Lancaster County, Pennsylvania
Intimate glimpses of the Pennsylvania Germans; proceedings
Pennsylvania: seed of a nation
The political career of G. Graybill Diehm : a thesis ...
A brief history of the Strasburg Rail Road
Miss Mary M. Martin, teacher extraordinary: 1847-1930
A monetary history of the United States, 1867-1960
A history of Long Park