Most states produce detailed road maps for use by their residents, commercial firms, and the curious tourist. This nice collection of Illinois state highway maps is part of the Illinois Digital Archives and it contains dozens of maps dating back to the 1920s. Visitors can start by reading about the history of the covers of these unique items on the homepage. After that, visitors can scan through the high-resolution images here for each map. Users can zoom in and out around each map as they see fit, and there are some nice tools here for rotating the maps as well. It's a great way to learn about the expansion of the road system in Illinois over the decades, and students of the Land of Lincoln will find it most enjoyable. [KMG]