[?]

I have built a small fleet of PRR detailed engines to provide
interchange service to the WM at Cumberland.

PRR 9663 is an Athern F-7 (PRR class EF-15a)

PRR 2027 is an A-B  Model Power DR-44-1600
(PRR class BF-16)

PRR 8494 is a Cary S-2 on an Athern chassis (PRR class AS-10)