I have a book of transcriptions, Masters of the Blues Harp, covering Little
Walter Snny Boys I and II, Paul Butterfield, and others. It has standard
notation, harp tab, guitar chords, and an advanced sytem of indicating
techniques like tongue blocking and note bends. In his foward. Charlie
Musselwhite calls it the "the coolest harp instruction book I've ever read."
http://www.celticguitarmusic.com/Masterstoc.htm
There a guy around here named Tom Ball who drinks Protestant whisky and is
also a harp author as well. He's not shy, so I'm sure he'll he getting in a
wee word about himself and his fine books. Just buy mine first.