I'm sorry for double posting. Today I was reading about the origins of a version of "Hares on the Mountain" (Roud No. 329) as sung by Horton Barker of Chilhowie, Smyth County, Virginia, originally from Tennessee. Recorded by Maud Karpeles in September 1950.

The recording is available on the album "When Cecil left the Mountains: Historic recordings of Appalachian singers and musicians 1927 - 1955" (2017) Musical Traditions MTCD514-5.

Song transcription as follows:

Young women they'll run like hares on the mountain
Young women they'll run like hares on the mountain
If I were but a young man I'd go and run after
To my right-fol-the-diddle-dee-ro,
to my right-fol-diddle-dee.

Young women they'll swim like ducks in the water
Young women they'll swim like ducks in the water
If I were but a young man I'd go and swim after
To my right-fol-the-diddle-dee-ro,
to my right-fol-diddle-dee.

Young women they'll sing like birds in the bushes
Young women they'll sing like birds in the bushes
If I were but a young man I'd go bang those bushes
To my right-fol-the-diddle-dee-ro,
to my right-fol-diddle-dee.

Horton Barker learned this song from Andrew Rowan Summers, a folk revival singer and folk song collector from Virginia. Summers recorded the same version (same tune, same words, one extra verse) on his album "Seeds of love" (1951) Folkways Records - FA 2021. Summers was a regular at the White Top Folk Festival held on Whitetop Mountain in Grayson County, Virginia from 1931 to 1939 which Horton Barker also visited.

Andrew Rowan Summers' version was originally collected by Cecil Sharp from Louie Hooper and her half-sister Lucy Anna White in Hambridge, Langport, Somerset, England in September 1903. So this wasn't an American version, but one that re-entered the repertoire of a traditional singer via the folk revival.

According to the album liner notes Andrew Rowan Summers learned the song in 1940 (I don't know where, I'm guessing it was at a folk festival) and later heard an extra verse in 1943. Horton Barker didn't sing that verse, it goes as follows:

Young women they bloom like laurel in the springtime
Young women they bloom like laurel in the springtime
If I were but a young man I'd soon go and pluck some.

A sound recording of Louisa Hooper singing the song exists. She was recorded by Douglas Cleverdon for the BBC on February 7, 1942.

The recording used to be available digitally. I would've enjoyed listening to it, to complete the picture between Horton Barker's version and its origin. But as of now I can't, the website is no longer available.

Does anyone know what happened to the British Library Sound Archive website?

It used to be available at "British Library Sounds":
https://sounds.bl.uk/

There's a Wikipedia entry on the website here:
https://en.wikipedia.org/wiki/British_Library_Sounds

The link to the digital archive no longer works. If you know what happened to it and when/if the website comes back let me know. The website was a treasure trove of field recordings of British folk music in the past.