Tom Paxton, though he was a good performer in his own right, is remembered mostly for covers that other folk musicians did of his songs. Everyone loved Paxton's songs, and everyone did them.
Johnny Cash has done amazing covers of other people's stuff, particularly later in his career. Not many people can do a song recorded by a dozen others and still move you with their version.
So this is the best of both worlds. I used to do the song myself, back in the late 60's and early 70's, and I thought I did it well. But never like this.