Chicago Sanitary and Ship Canal at Willow Springs, Illinois.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/126377022@N07">Internet Archive Book Images</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/internetarchivebookimages/14597773908/">Image from page 47 of "Memorial, presented by the Trustees of the Sanitary District of Chicago to the Congress of the United States : deep waterway from Lake Michigan to the Mississippi River at St. Louis" (1904)</a>