Ayup Phil,
Well it depends what you're looking for, one very good picture book is Modern Bonsai. Check it out here:
http://forum.bonsaitalk.com/f11/mod...books-7683.html
You might want to check out some of Bonsaials' other posts as he has some good ones on Shohin.
A good magazine is Bonsai World, its in Japanese but you can just about make out whats going on and they have alot of articles on Shohin/Mame.
Cheers
Ian
Former Barnsley Lad