Does this song description ring a bell with anyone?

(I emailed this to rg@ronniegilbert.com but it was bounced back.)

Dear Ronnie Gilbert,
Many years ago I was at a concert where you and Lee Hays, or maybe it was Fred
Hellerman, sang a song about a man and his wife thinking about each other.

If my memory isn't too far off, the man was working in the farm fields, and
the woman was working in the house. The refrain was, "Round about now", and
then a verse telling what one was imagining the other doing while they were
apart, taking turns. Does this sound familiar?I have tried searching for it several times, to no avail.