Yup, it's Peggy Seeger alright . . Oft sung by Ewan MacColl. I don't know if it's on one of the records with song sheets (I know we've a couple of recordings of it, one from a radio broadcast). I'd guess it's on "Penelope Isn't Waiting Anymore".

I'll see if I can find it . . but feel free to email me a reminder (gdothawesatsandotcom) as I'm finding it hard to find time to visit this place these days . .

George