I came upon the site http://www.utorpheus.com, to find that Judith Liber, internationally known harp professional, has a new 2008 harp method available from this Italian publisher. It is 112 pages, price is 28 euros,
The only other harpist I know of to use that scale fingering is Judy Loman. I think it may be used in Europe. I don’t care for it, myself. I like that she made it inspirational, and gave harpists something to aim for besides getting a job and playing the right notes.