The title block says: "P.R.R. Co., Western Lines, Type "A" Engine House, Crane Section - Steel Design, Typical Elevations, Outer and Inner Circles, Office of Chief Engr-Const, No. 18477". The drawing is dated Aug. 2, 1918, and revised July 25, 1918.
Elevation "A" shows: "this arrangment of sash adjacent to permanent end bay only". The roundhouse was designed with a temporary and a permanent end, to allow for possible future expansion.