Abandoned Railroads of Pennsylvania
Tremont to Lebanon  -  Reading RR/Conrail
Auburn to Pine Grove to Dauphin  -  Reading RR
Hanover to Frederick, MD (2 segments)  -  Pennsylvania RR
Conboy to Edgemont, MD  -  Western Maryland
Waynesboro Branch  -  Pennsylvania/Penn Central
Chambersburg Area  -  Western Maryland (B&O/CSX)
Mercersburg Branch  -  Pennsylvania RR (PC)
Shippensburg to Isle  -  Pennsylvania RR (PC)
New Freedom to Ashland, MD  -  Northern Central (PRR/PC)
Mechanicsburg to Dillsburg  -  Pennsylvania RR (CR)
East Broad Top
Landenburg to Hokessin, DE - B & O
Pomeroy to Newark, DE - PRR
Chester to Chadds Ford, Nottingham to Rock, MD - PC/PRR
Crane Jct to Catasauqua - Lehigh & New England
West Catasauqua to Lehighton - Lehigh Valley
Williamsport to Elmira, NY - PRR/PC
South Pennsylvania Railroad (surveyed, never built)