Also check out music published by Cindy Kleinstuber Blevins for her husband’s Blevins Mezzo 23. That harp is strung down to the F below middle C. 2 volumes of “Elegant Music for the Lovely Lap Harp” are some of my favorites.
My arrangements for harp almost always include a version for harps of this size. You’ll find the on line catalog at http://hornandharp.com/publications/. There are only a few that didn’t work for both G-g and C-c. The catalog should list each clearly. If you have questions about any, let me know.