Charles E. Winters of Kansas City, Missouri, is the apparent source for this image of PRR 4-6-2 No. 3768 taken in Chicago on September 14, 1946. She was the first of the K-4s to be streamlined in the 1930s by Raymond Loewy in a one-of-a-kind design not duplicated on the Pennsy's other streamlined Pacifics. By the time this photo was taken some of her original skirting, which hid the valve gear and the upper part of the drivers, had been removed for easier maintenance — something that happened to many streamlined steam locomotives as they passed through various stages of their careers. No. 3768 was one of fifty members of the K-4s class the PRR's Altoona shops erected in 1920.