Update and closure:

Many thanks to "Brucie"; his information led to a happy ending for this quest.

I just got a phone call from Mr. Eagan at Kenwood Press. The music is available in an exact replica (an 8-page organ score) of the 1909-published edition. The price is more than reasonable, and is apparently being placed in the mail even as I type this.

The person this is for, is going to Greece to meet her cousin, the aforementioned organist, for the very first time. I tnink this is gonna be pretty nifty.

Many thanks also, to Little Robyn and McGrath for input, and yet again to Brucie.

Dare I say it? Mudcat rules!