#21 there is a flag. Just drive up the road a bit.
https://www.google.com/maps/@39.2803863,-84.9754797,3a,67.6y,118.06h,98.01t/data=!3m6!1e1!3m4!1sQWX6UcLoEdV7MNYmEKAgdQ!2e0!7i16384!8i8192?entry=ttu
Nice. Is that the states flag below it?