These 40’ box cars with single doors are painted silver and black with orange and red logos and black lettering. They were built in June 1946 by Mt. Vernon Car Co., serviced in February 1956, and run on Bettendorf trucks. The silver “Overnights” paint scheme was adopted in late 1955; the herald was SP Daylight Orange with black lettering; the logo lettering was SP Daylight Red. The word “Overnights” was dropped in 1957 and shortly after, in 1958, the color of the herald was changed from orange to Daylight Red. However, no attempt was made to repaint the entire fleet of overnight cars. The silver “Overnights” paint scheme was seen into the late 1960s.