Grove City, Pennsylvania, ADAP Request No. 71-1-7-42-0035
Conquering Gotham : a gilded age epic ; the construction of Penn Station and its tunnels
City of Philadelphia Airport High Speed Rail Line
Reading Municipal Airport, Reading, Pennsylvania
Greater Pittsburgh International Airport, Pittsburgh, Pennsylvania. Book I. Introduction. Appendix A
Greater Pittsburgh International Airport, Pittsburgh, Pennsylvania
Defense Use of Certain Federal Property: Philadelphia Area, Navy
Historic Resource Study - Allegheny Portage Railroad National Historic Site, Pennsylvania
Pennsylvania. Airport Project at Shamokin. Northumberland County
University Park Airport, State College, Pennsylvania
Cross Valley Expressway, L.R. 1052 Section 1, Luzerne County, Pennsylvania