Peacock has music for all songs, about 400. It would take a while, but would an index be useful?
When it was issued, copies were furnished to many libraries across Canada. I have no idea of the printing, but I doubt it was more than 1000 sets. Many libraries have discarded them, so the set is very hard to consult. The 3 for $110 is not much more than the $90 I paid for a library discard set about 3 years ago.
The Mackenzie is a bargain considering its scarcity.
Creighton's, having been reprinted by Dover, is cheap at the moment.