We found, Quakerbooks.Org, A Resource Guide for Quaker Materials from the Friends General Conference Bookstore. They list WORSHIP IN SONG: A FRIENDS HYMNAL ("A songbook/hymnal with music and words reflecting the diversity of The Society of Friends"). It costs $20, but doesn't list the contents- so I don't know if it's the one with, 'The Peace Round,' in it. Maybe they'd tell you if you want to pursue it (kind of a lot to pay for a little song like that- which you already know!).
People keep quoting, "Ah poor bird, take thy flight..." as though it were sung to the same tune as, "Rose, Rose." The "poor bird" song that I know has a completley different melody. No? I'm leaving tomorrow for 10 days, so I guess the thread will be long gone when I get back! Jean"