As Malcolm correctly guessed, the arrangement I posted is from the Young Tradition. I was one-third of a group that sang it, and we learned our parts by singing along with the YT recording. One of our members transcribed it after the fact, so it may be "folk processed" even more by us.
Thank you for the research, Malcolm. I have long wondered about some of the phrases and sources of the song. We (and the YT) sang "fleet" not "sleet".
Blessings,
Barbara