Google Loomis House Press. They've been publishing the collection, with some of the tunes. The final volume is about to be published. They also currently have a reprint available of Bronson's tunes. Bronson did the same job with the tunes as Child did with the words - collecting all the available versions. This is a four volume set, available for a limited period. There is also a volume of selected ballad texts, if you don't want the whole set.
John Kelly.