Old PRR Form 1 Exports
US Photos
PRR Washington Tours 1914

The four pages below hold a variety of images and copies of various documents;

1.    Photos taken by my self in the USA mainly at the Pennsylvania State Railroad Museum at Strasburg Pa.
2.    Images of the PRR of old
3.    Scans of part of the January 1967 and January 1965 passenger timetables.
4.    Photos of American Locomotives imported into Europe
5.    A copy of a brochure from 1914 on escorted tours of Washington DC.

Below are a few statistics from the 1954-55 and 1960 editions of Jane's World Railways about the Pennsylvania Railroad.
If a comparative figure is not given there wasn't one....