Pennsylvania Railroad Modern Locomotives and Cars 1939 brochure
PRR Pennsylvania Railroad Motive Power Brass Obsolete Locomotive
Modern Railroads Magazine Nov 1956 – Pennsylvania Railroad - Special Issue PRR
100 Years of Progress in Modern Railroading 1833 1933 Pennsylvania Railroad (L1)
Vintage 1939 Pennsylvania Railroad Brochure ???? Modern Locomotives S-1 Steam
Pennsy Power Pennsylvania Railroad 1900-1957 By Alvin F Staufer 1962
