Looking for an assist to help fill gaps in my ORER coverage to determine final dates in revenue service for the following PRR stock car classes for an upcoming article in The Keystone Modeler:
K7 (7/1950 - 15, none listed in 1/1955) K7A (10/1963 - 3, none listed in 4/1968) K8 (10/1963 - 2, none listed in 4/1968)
