BLACK AND YELLOW TRAIL, a highway extending from Chicago, Ill., to Yellowstone park by way of the Black Hills and the Bad Lands of South Dakota. It is about 1,570m. in length. Paved and improved through Wisconsin, the balance is graded and improved with some dirt stretches in Minnesota, South Dakota and Wyoming. This road passes through Cody, Wyo., and is often spoken of as the "Cody Way." It is the shortest route from the Great Lakes to Yellowstone park. Wind Cave National park, with an area of I0,522ac., lies in its path, while Milwaukee, Portage, Rapid City, Deadwood and Newcastle are some of the cities through which it passes.