Heavy traffic on the Dan Ryan Expressway in Chicago, Illinois, October 1973. At the time, it was the busiest stretch of road in the United States with 254,700 vehicles daily. The tall building in the background is the Sears Tower (now the Willis Tower), 110 stories high and the world's tallest at the time it was completed, five months before this photograph was taken. (John H. White/NARA)
Source:
http://www.vintag.es/2013/08/photos-of-african-american-community-in.html