Just wanted to mention the Internet Archive to you all, in case you were not aware of it.
Check out the categories of Harp Music, and Harp music, Arranged, and, say International Harp Archive at Brigham Young University perhaps?
As far as I am aware, this is fair use, out-of-copyright stuff. Your mileage may vary (by country and by item) so please check for yourself. It's good karma :)