Altoona. Here is a photo by an unidentified photographer that was taken from the 17h Street Bridge in Altoona, Pennsylvania, in 1963. Parked in the Pennsylvania Railroad's Locomotive Ready Tracks is engine #9730, a BF-16 built by Baldwin-Lima-Hamilton in February of 1951, rated at 1,600 horsepower, and retired in July of 1966 after just 15 years of revenue service. Brad Mann Collection.
ARB. Here is a duplicate 35mm color slide of a photo by David R. Sweetland that was taken in Altoona, Pennsylvania, on 17 July 1957. Prominent here (L to R) are Pennsylvania Railroad engines #9730 and a Shark "B" unit whose number is not recorded. Both were built by the Baldwin Locomotive Works. #9730 is a BF-16 built in February of 1951, rated at 1,600 horsepower, and retired in July of 1966 after just 15 years of revenue service. They're about to pass under Juniata's 8th Street Bridge with a mixed-cargo freight train on their way to 4th Street, where they'll stop for a crew change before proceeding up the Allegheny Mountains via the Horseshoe Curve to Gallitzin and points West. Partially visible at the left is PRR engine #7602, an ES-17M built by GM-EMD and rated at 1,750 horsepower.
WIL-ALT-64. Here is an original photo that I took while riding in a Pennsylvania Railroad passenger train from Harrisburg to Altoona on 3 July 1964. Shown here (F to R) is PRR engine #9730 and another unit whose road number is not recorded. #9730 is a BF-16 built by Baldwin-Lima-Hamilton in February of 1951, rated at 1,600 horsepower, and retired in July of 1966 after just 15 years of service. They're pulling a westbound mixed-cargo freight train near Mount Union, Pennsylvania.