Some country artists who've covered them:

Billy Hoffman: I Want You (All I Wanted Was You, title track of his debut CD)
Montgomery Gentry: Wanted Dead or Alive (on the Pro Bull Riding Association CD)
Chris Ledoux: Bang a Drum (duet with Jon on One Man Road and his box set)

I have a partial recording of Nelson singing Wanted Dead or Alive--they did it at a radio station and the radio played their version for Jon and then Matthew Nelson made a guest appearance during Jon's interview.

Becky