Dry Branch Fire Squad recorded "Faded Coat of Blue," which is obviously about the North.
Catfish John - isn't that the delta in Mississippi?
Alabama Waltz, Kentucky Waltz, Connecticut Waltz (OK, no fair, I wrote the last one, but we do it as bluegrass)
Little Georgia Rose
Hills That I Call Home, by Bob Amos (New Hampshire)
Banks of the Ohio
Westphalia Waltz (where is that, anyhow?)