A listing of the tracks, and the listing of re-issues of the album, "Folksingers 'Round Harvard Square," (original- Veritas XTV-62202/3 vinyl) at this Baez website:

Discography

My statement that the verses I posted were in this album are based on website statements- and the fact that I can't find a chantey version in the lyrics sites. (OK, there is doubt since I don't have the original).
This site gives lyrics to all songs on the Harvard Square recording; the "Lowlands" lyrics ascribed to Baez are those I posted. Lyrics are given for all 18 songs on that vinyl. Are they correctly given?

http://www.sing365.com/music/Lyric.nsf/Lowlands-lyrics-Joan-Baez/B7B03BA92F0B397148256C9C001FF78F
I hope I copied that correctly- Perhaps easier by googling "Folksingers 'Round Harvard Square" and scrolling down a few listings to the sing365 entry.

I wish I could give a better answer, but I lack the recording. I hope we can find it.

The "Lowlands" by Baez (says 1960) on youtube- www.youtube.com/watch?v=Dq9xeofCyQ0- is not a chantey and not the lyrics I posted. (Linked by GibbSahib). ?? A very slow, dreamy song.