Try contacting Wren Music in Okehampton, Devon and Martin Graebe in Cheltenham. They have recently completed researching and publishing the previously unpublished Baring Gould manuscripts that were found in the cellar at Killerton. Each year we now have a Baring Gould Festival which is preceded by a study week. Access is available to the manuscripts and plays is a big part and people are helped to research the songs, places, people etc. If you can't find them on the net pm me and I'll give you e mail addresses for them.. I'm sure they will be of great help and their work is of huge importance.