Nigel North's book is great. I haven't heard about a new edition, though. Those old French treatises are generally not so helpful (Fleury, Delair etc.) Bartelomi is pretty good though. I think it was 1669. I'm not sure if there's a facsimile available.
In addition to those realizations by Castaldi, there's a whole book of villanelle by Kapsberger with guitar alfabeto, b.c. line, and theorbo tablature. It's a little hard to know what to make of them though. Also, you might find Kapsberger book 3 useful. There are two theorbo continuo manuscripts that are quite handy. There's one in the New York Public library that's basically just fingering tables (there are some interesting shapes). The other is the so-called Modena ms, which has many, many ways of ornamenting various. It's a treasure trove of early Italian theorbo style, very florid. It is a really great source, and it's been published in a modern edition. Charlie Weaver To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
