Illinois Song - accompaniment here
And once, while I was searching for folk songs, I came across these charming songs about my state.
The Plains of Illinois
El-A-Noy
Rock Island Line
Goin' Down to Cairo - Cairo is pronounced "carrow," which rhymes with "marrow." It lies on the junction of the Mississippi and Ohio Rivers on the Southern tip of Illinois.
And... these songs work be great for any states who have been part of the "western expansion."
Little Old Sod Shanty
When I First Came to This Land
To the West