This B-29-class plug-door boxcar with Barber Roller Bearing trucks was built in 1967 and featured a cushioned underframe and an internal capacity of 4,640 cubic feet. Western Maryland, Chesapeake & Ohio and Baltimore & Ohio merged in 1972 to form Chessie System. It remained one of the largest East coast railroads until 1986 when Seaboard System merged with Chessie to form today’s rail giant, CSX Transportation.