|Chione. Here is a duplicate 35mm color slide via Al Chione that was taken near Mill Creek, Pennsylvania, on 23 July 1955. The photographer is not identified. Shown here (L to R) are Pennsylvania Railroad engines #9875 and two more "EF" Class units whose numbers are not recorded. All are EF-15A's built by GM-EMD and rated at 1,500 horsepower each. #9875 was built in September of 1952 and retired in October of 1967 after just 15 years of revenue service. Westbound merchandise, rockin' 'n' rollin'!