Intrada in C from book "Organ Romantic 1 - Sacred Melodies for Organ" by Roman Bissinger (1967).
Thanks to Roman for this beautiful music, as he says in the title "Sacred Melodies".
I must say I have been since I got her book by mail, fast, the next day, I'm playing her pieces already in my parish. I like them very much! For example this Intrada beginning of Mass is spectacular!
If you want to listen to all the volume in the always superb rendition of David Lamb (Agnus Dei), click this link: