There's a page here (http://www.meloware.com/articles/vernon_dalhart.htm) offering to let you download the song, but it says "internal server error" if you try to because you have to pay a membership fee. On the bright side, if you do do that, you'll have access to download tons of songs from there.

Unfortunately not much I can find on the Peerless Quartet, and I don't have a copy of either of them.

If you happen to be near UCSB, they have a copy of both of the songs on file.