I don't know of a site from which to download that song. I do believe that the song, written by John when Opryland was building the Mississippi Queen, was actually commissioned by Opryland. The tune was VERY CLOSE to an older song sung by Doc Hopkins from the WLS Barn Dance radio show out of Chicago. (That earlier song had no river connection.)

I did play the two songs back-to-back for John one day and he was pretty amazed at the coincidence.

Art