Looking at Free Sacred Music for the 28th Sunday in Ordinary Time, you might find some very rare and interesting things.
Such as the NOH organ accompaniment to a very rare Gradual (that used to be on a Ferial day in Lent, but has been placed on a Sunday in the new calendar).
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.