You are so right. On the Folkways recording, you are also right about the the song sounding like the Cajun Blues; but it's a bit of a stretch on the Leo Soilieau version. Interesting, though...thanks.
No. it is not on Neal's site. I did do some checking and found copies available on ebay, half.com, and amazon.com. The title of the CD is "The Early Recordings of Leo Soileau" (Yazoo 2041). Ann Savoy wrote the booklet that accompanies the CD. There is a pretty wide range of prices, but the lowest seems to be $9.99.