Pressed Steel Car Co. Pittsburg, Pa. Series of mechanical blueprints13 uneven leaves, approx. 9 x 12 inches, bound with brads; various corners clipped. Series of mechanical blueprints and charts dated 1903 1915, with the "h" missing from "Pittsburgh" depending on the year. Light creasing and fingersoil, overall Very Good with great visual texture and depth. The Pressed Steel Car Co. built railroad cars and equipment, including work for Carnegie Steel.