It's been awhile since I have been on here but now that I am back I want to say that I am still exploring the abandoned route and recently have been working on aerial photos of the 1938-40 era showing the South Pennsylvania Railroad just 50 years after the line died.
southpennrailroad@yahoo.com
Look just above the first letter :"A" along the top right edge of the photo to see a slanted line that is the work of the South Penn being built to reach Breezewood B$ the turnpike was being built in 1939.
Tracking the William Henry Vanderbilt South Pennsylvania Railroad right of way along the Historic Pennsylvania Turnpike.