I think that part of the problem is the tunes may not be perused by
musicians before they are published. Case in point the Argyll Square in book 43.
The tune suggested is listed as Dennis O'Connor, trad.
In fact it is Planxty Denis O'Connor or just plain Denis O'Connor and
attributed in 2 books by OCarolan. And it has 3 parts.
I don't know if O'Carolan is well known in Scotland but his tunes are well
known in the US.
I mentioned this discrepancy to a person very well connected with HQ and
they were totally unawares of the mistake.
Sylvia Miskoe, Concord, NH USA