Had some thoughts on this
In my opinion, one of the milestones of the early revival (along with The song Carriers) was the 10 album Caedmon/Topic series, 'Folk Songs of Britain' edited by Peter Kennedy and Alan Lomax
Despite the fact that it is slightly flawed by having the songs edited by cutting out verses in order to get as much on as possible, the accompanying booklet give all of the songs in full
It remains, in my view, a magnificent selection of British and Irish songs traditional songs - pretty well the best of the best
Since Topic put it out it has never been re-issued (due to greed)

I have it digitised and some time ago I started to put in full versions of the songs from our own archive.
For a learner it is a dream for a learner - many of us cut our teeth on them ten categorised albums - Courtship, Seduction, Sailors, Solders, Poaching, Ballads (2), Ritual, Animals and Magic, .... - long overdue for improvement and re-issue - though now longer the revival seems to have forgotten what folk songs is, it probably never will be
Happy to pass on what I have done so far and update as I proceed
Anybody interested can PM me their e-mail address and I'll put it in PCloud for them

"Roud"
Would agree in general, but sinc it now includes non-folk songs it's not the superb and reliable guide for the newcomer as it once was
Jim