I'm an absolute sucker for that kind of ramantic music. Absolutely love it, and love this march. It also sounds pretty straightforward so I'm not anticipating any real difficulties learning it. So I'm gonna add that to my list and get a copy. 
It's published by United Music Publishers
DELVINCOURT Claude (1888–1954)
3 Pièces 1.Marche d'Eglise; 2.Méditation; 3.Sortie de Fête
And you'll notice from when he died that the copyright has not yet expired in the EU.
Here's their catalogue...
http://www.ump.co.uk/PDF/21-05-07%20...0Catalogue.pdf
Nice find. Thanks