Steve Gardham wrote: Bob, can you let me have the details on the Wooldridge work, please? My copy of Chappell is the 16 vol paper copies.

It still lists Chappell as the primary author:

Old English Popular Music
by
William Chapell, F. S. A.

A New Edition
with a preface and notes, and the earlier examples entirely revised by
H. Ellis Wooldridge

Two Volumes

LONDON:
Chappell & Co and MacMillan & Co

NEW YORK:
Novello, Ewer & Co
(both volumes) 1893

I have the 1893 edition. It's been reprinted at least once since, but it never became popular enough to have a Dover edition, e.g. So it's a lot rarer than editions of the original.

I wouldn't rush out to get it. It is not, unfortunately, a replacement for the original Chappell -- Wooldridge dropped at least half the text, and almost all the lyrics. What he did was restore the transcriptions of the melodies to their state before Chappell revised them (e.g. letting the Dorian tunes be Dorian, and the natural minors be natural), plus he made the information about his sources a little more explicit. If you don't have original Chappell, then Chappell/Wooldridge is basically useless (because it has no texts and drops much of the history), and if you are working more with the texts than the tunes, it doesn't add much to your knowledge.