Railroads of Pennsylvania : your guide to Pennsylvania's historic trains and railway sites
The railroad that never was : Vanderbilt, Morgan, and the South Pennsylvania Railroad
Failure rates and data driven policies for vehicle safety inspections in Pennsylvania
The Ma & Pa : a history of the Maryland & Pennsylvania Railroad
Grove City, Pennsylvania, ADAP Request No. 71-1-7-42-0035
Stulta est clementia, cum tot ubique vatibus occurras, periturae parcere chartae. Juv