The slide reads: "Peoria Courthouse 2/3/78. 1978-75-17." The photograph shows a plaque at the Peoria County Courthouse marking the sites of one of the Lincoln-Douglas debates. The sign reads: "Near th…

The slide reads: "Peoria Courthouse 2/3/78. 1978-75-22." The photograph shows a portion of the plaque at the Peoria County Courthouse denoting the site of the Lincoln-Douglas debate. The portion shown…