|Derailment. Here is an original photo that I took of Pennsylvania Railroad trains in Altoona, Pennsylvania, on 21 May 1965. Shown here at the far left (L to R) are PRR engines #8676 and #8665. Both are AS-18AM's built by the American Locomotive Company in 1958 and rated at 1,800 horsepower each. They have just arrived to serve as "helpers" for an westbound passenger train due to arrive shortly. Visible in the center is PRR engine #8677, an AS-18AM built by the American Locomotive Company in 1958 and rated at 1,800 horsepower. It is coupled to the "eastern" work train and steam-powered crane that are rerailing the derailed cars and locomotives of the eastbound freight train on the next track over. Visible on the right (L to R) are the two derailed locomotives, PRR engines #5631 and #8890. Both were built by the American Locomotive Company in 1950 and rated at 1,000 horsepower each. #5631 is an AS-10AM while #8890 is an AS-10. Visible in the background are four of the original PRR 12th Street Car Shop buildings. A portion of 10th Avenue is visible in the immediate foreground.