No, not "Bronson in paperback"; it just includes (I assume from the little I've seen) those tunes that go specifically with specific versions included in Child's original work; he included only a small selection of tunes at the time, his primary purpose being to provide a scholarly overview and analysis, not a songbook. Bronson aimed to include all known examples of ballad types listed by Child that had tunes, which was quite a different thing. There will still be a lot for which no tune was recorded, of course. The Loomis reissue will be in 5 volumes like the original; see the website for details.