Pete's right about that, it is one of the best, and this certainly gives us an excuse to talk about it! I actually cannot remember who I first heard it by, probably Vernon Dalhart ~~ other good versions not already mentioned by Pete are by Hank Snow, Jim Reeves, and Mary Robbins. It is my understanding that it is a Carson Robison composition. (when in doubt, say Carson Robison, and you have a chance at being right)