THE ASH GROVE in the waltz book or the arrangement by Benjamin Britten. The Waltz Book and the Waltz Book II are great resources for these. There are several with lyrics. Also there are lyrics to Ashokan Farewell.

ASHOKAN FAREWELL (lyrics by Cleo Laine and John Dankworth)
ASHOKAN FAREWELL (lyrics by Grian[?] McGregor)