This is a sub-group of markers erected by the Illinois State Historical Society and typically either the Illinois Department of Transportation of the Illinois Division of Highways. Most were put up in 1964-5 and feature a blue design (although a few deviate from this pattern). However, all of them feature the slogan: "See Historic Illinois". These historical markers are distinct compared to other markers put up by the Illinois State Historical Society and showcase the changes that the historical marker program has gone through since its inception in 1932. The most common of these markers are titled "Thy Wondrous/Wonderous Story, Illinois", but many of them have become missing over the years.
