Old State of Iowa Transportation Maps

Last week, a patron asked if we had old Iowa road maps.  Specifically, one from 1957.  I wasn't sure.  So, I did what I usually do, and did a quick search online.  Luckily, the State Library of Iowa has PDFs available online of  Iowa Transportation Maps going back to 1952.  I thought it was cool to go back and look at how much the roads have changed.  You can check them out here:  http://publications.iowa.gov/view/subjects/VJ.html