The song was collected in the Bahamas from Joseph Spence and the Pindar family and can be found on "The Real Bahamas", I think it's a Folkways album from the early sixties. The compilation of Bahamian street music was collected --very roughly -- by Jody Stecher and ? someone else I know but the name escapes me at the moment. It included the hymn "Lay down my dear sister/brother" in the middle of it, and has most of the verses found on Incredible String Band album (Hangman's Beautiful Daughter). I can go check in the vinyl dynosaur file and see if I can still find the album.
The Spence/Pindar family version is similar to the ISB's only it is much rawer and more powerful. The word "goodnight" for example, on the Spence/Pindar recording is one long slide each time, rather than a series of notes.
I like the Incredible String Band, but it bugs me that they copyrighted it in their own names rather than Brother Spence and his friends.
Blessings,
Barbara