Hi Everyone ,
Wow, reading through this thread is like traveling through time a bit. I know of this song through my Mom who was a camper and later a camp counselor at Camp Manitou in New Auburn WI. I can't tell you how many times we have sang this haunting tune around the campfire.
I was transcribing this song as a gift to my Mom, and was looking for who originally wrote it. I will make sure to correct the tab to reflect Mary as the author. It looks like my version is very close to what John put down as the chords.
I hope this helps keep the song alive.