Pennsylvania Railroad (PRR) 9788 - EMD F7A

24th Street. Here is an original photo that I took in Altoona, Pennsylvania, on 11 October 1963. Shown here (R to L) are Pennsylvania Railroad engines #9557, #9550-B, and #9788. All were built by GM-EMD and rated at 1,500 horsepower each. #9557 is an EF-15 built in September of 1948 and retired in May of 1966. #9550-B is an EF-15A built as an EH-15 in December of 1948, later regeared and reclassified as an EF-15A, and retired in September of 1965. #9778 is an EF-15A built in February of 1951. This A-B-A set is about to pass under the 24th Street Bridge with 154 empty hoppers on their way up the Allegheny Mountains to the coal mines of Western Pennsylvania. Wave to the Engineman!

Gallitzin. Here is an original photo that I took at the tunnels under Gallitzin, Pennsylvania, on 13 September 1964. Shown here (R to L) are Pennsylvania Railroad engines #9785, #9788, #7069, and #8843. #9785 and #9788 are EF-15A's built by EMD in February of 1951 and rated at 1,500 horsepower each. #7069 is an EFS-17M built by GM-EMD in October of 1956 and rated at 1,750 horsepower. #8843 is an AS-16MS built by the American Locomotive Company in December of 1951 and rated at 1,600 horsepower. In this context, they're emerging from the eastern portal of the New Portage Tunnel with a 108-car coal train on their way down the Allegheny Mountains via the Horseshoe Curve to the Eastbound Receiving Yard in Altoona. The N-8 cabin car is #478171.

Tipton. Here is an original photo that I took in Tipton, Pennsylvania, on 11 April 1964. Shown here (L to R) are Pennsylvania Railroad engines #8624, two unidentified "EF" Class B-units, and engine #9788. #8624 is an AS-18M built by the American Locomotive Company in August of 1956 and rated at 1,800 horsepower. #9788 is an EF-15A built by EMD in February of 1951 and rated at 1,500 horsepower. They're pulling a 63-car westbound mixed-cargo freight train along with cabin car #477228.