Hi Vic Smith,
I hope my "you should consult..." did not come across as an admonition. It was meant as a pointer/guide in case you had not seen it... Anyway it appears that the received wisdom out there is that this is the most complete list available, unless anyone knows otherwise.
My own listing of releases on the Celtic Music label, compiled on wikipedia, is possibly less thorough and still has a few holes, which I am tending to believe represent items never released, but maybe additional information may turn up. Best - Tony