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
prepared by the Research Staff of the Highway Advisory Committee in cooperation with the Engineering and Public Works Section of the League of Wisconsin Municipalities and the Planning and Research Division of the State Highway Commission of Wisconsin