Einfach, aber großartig : die Dampfloks der Reihe K4s der Pennsylvania Railroad
The railroad that never was : Vanderbilt, Morgan, and the South Pennsylvania Railroad
Railroads of Pennsylvania : your guide to Pennsylvania's historic trains and railway sites
Failure rates and data driven policies for vehicle safety inspections in Pennsylvania
In Council of Safety, Philadelphia, November 16th, 1776 : Sir, The fleet which sailed from New-York
Fueling the Gilded Age : railroads, miners, and disorder in Pennsylvania coal country
The Ma & Pa : a history of the Maryland & Pennsylvania Railroad
Grove City, Pennsylvania, ADAP Request No. 71-1-7-42-0035
Evaluation Report: Driver Experience with the Enhanced Object Detection System for Transit Buses
Ships for the seven seas : Philadelphia shipbuilding in the age of industrial capitalism
Commuter Railroad Service Improvements for a Metropolitan Area - Sepact I
Greater Pittsburgh International Airport. Book II. Appendix B. Appendix C (Part 1)
City of Philadelphia Airport High Speed Rail Line
Conquering Gotham : a gilded age epic ; the construction of Penn Station and its tunnels
Greater Pittsburgh International Airport, Pittsburgh, Pennsylvania
Erie Bayfront Intermodal Integrator Study
Legislative Route 346, Section 6 (Traffic Route 45), Huntingdon County, Pennsylvania
Reading Municipal Airport, Reading, Pennsylvania
Attitudes, Perceptions, and Constraints on Travel
Transportation Innovation and Changing Spatial Patterns: Pittsburgh, 1850-1910
Status Report: Mass Transportation and Highway Planning
Pennsylvania. Airport Project at Shamokin. Northumberland County