a study conducted in 1955 by the State Highway Commission of Wisconsin in cooperation with the City of Waukesha and the U.S. Department of Commerce, Bureau of Public Roads
a study conducted jointly by the State Highway Commission of Wisconsin and the city of Kenosha, in cooperation with the Bureau of Public Roads, U.S. Dept. of Commerce
a study conducted jointly by the State Highway Commission of Wisconsin and the City of Appleton in cooperation with the Bureau of Public Roads, U.S. Department of Commerce