1. A good-natured map of the United States : setting forth the services of the Greyhound Lines and a few principal connecting bus lines Princeton University Public content 1937. Greyhound Lines. Pictorial map. Relief shown pictorially. "Lithographed in U.S.A. by the Reserve Litho. & Ptg. Co., Cleveland.". [S.l.] : Greyhound Lines, [1937?].