| Oil Power. Here is an original 35mm color slide of (L to R) Pennsylvania Railroad engine #9535 and two more units whose road numbers are not recorded. All were built by GM-EMD. #9535 is an EF-15 built in September of 1948, rated at 1,500 horsepower, and retired in December of 1966 after just 18 years of revenue service. The photographer's name, the exact date, and the location are not recorded. |