United States. Post Office Dept. "Post route map of the states of Ohio and Indiana with adjacent parts of Pennsylvania, Michigan, Illinois, Kentucky and West Virginia showing post offices, with the intermediate distances between them and mail routes in operation on 1st August 1883." Map. Washington, D.C: The Dept., 1883. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:7h14b5159 (accessed April 24, 2024).