Discussion relating to the PRR, up to 1968. Visit the PRR Technical & Historical Society for more information.
  by hoffman900
 
I picked this up for cheap at a local flea market. Thought some of you might enjoy this. It's in wonderful shape and is the 1920 reprint.

PRR Electric Train Service 'Automatic Air Brake Train Signal and Electrical Equipment Instructions'. It has a really cool out diagrams as well (I'll post pictures of them when I get the time). I'm not sure how rare this manual is.

http://www.flickr.com/photos/[email protected]/6636962949/