Date and title are in Child's bibliography, but unfortunately he arranged it chronologically rather than alphabetically, which makes it a pain to find things.

Yes, 18 tune examples in Bronson; a few more have emerged since. Original copies are indeed beyond the pocket of normal humans; over the space of a couple of years I photocopied all four volumes. That wasn't cheap either, but it was affordable done, so to speak, on the instalment plan. Perhaps, one day, Heritage Muse will deliver the digital edition they've been promising for several years now.