These models are PRR Congressional reskins of the freeware G-TraX 4-Pack Lightweight Passenger Cars by Harry R. Adkins. Included cars are the Baggage, RPO, Coach, Diner, Sleeper01 and Sleeper02 (observation). At this time, observation cars were not permitted in Washington Union Terminal.
The PRR purchased sixty new streamlined cars from the Budd Company in 1952. The cars were used on the "Congressional" and also on "The Senator", a Boston - Washington "limited" that was shared with the New Haven Railroad. These handsome stainless-steel cars with Tuscan red trim were assembled into train sets of coaches, parlor cars, dinning cars and squared-ended observation cars.