Ohio Rev. Code § 5533.16
The road known as United States route number sixty-eight, running in a north and south direction commencing in the municipal corporation of Toledo in Lucas county and extending through the counties of Wood, Hancock, and Hardin to the point of junction with state route number thirty-one in the municipal corporation of Kenton in Hardin county, through the municipal corporations of Toledo, Perrysburg, Bowling Green, Portage, Van Buren, Findlay, Arlington, Dunkirk, and Kenton; and the road known as state route number thirty-one running in a north and south direction commencing at the point of junction with United States route number sixty-eight in the municipal corporation of Kenton in Hardin county and extending through the counties of Hardin and Union to the point of junction with United States route number thirty-six in the municipal corporation of Marysville in Union county through the municipal corporations of Kenton, Mount Victory, and Marysville, shall both be known as "Johnny Appleseed Highway."
The director of transportation may erect suitable markers upon said highway indicating its name.
R.C. §5533.16