There is a whole series of PA logging railroad history books by Thomas Taber and some other writers. Different books for different areas of PA.
This might cover your area, but I'm not sure.
Whining Saws and Squealing Flanges; Cross Fork, Emporium, Austin, Hicks Run, Galeton by Thomas Taber
You can get these books to read at your local library via inter-library loan. And you can find copies for sale online.
I've read about 6 of these books, and they are very interesting. You can learn a lot about the logging operations, then you can see the remnants still out there in the landscape.
There are logging railroad grades all over the place. And you'll see remains of splash dams too, if you keep an eye out while walking along the streams. And the rock walls they used to contain the splash.
I got pretty deep into this topic, trying to figure out the effects it all had on the trout habitat of the streams.