Naoko McCracken from Michigan, USA, has published a Japanese WordPress book in October 2006. See Amazon.co.jp listing with google auto-translation. I was very pleased that she has included my WordPress plugin Maintenance Mode in that book and described it on pages 249/250.
I really didn’t thought that she would send me one of her samples just because of my plugin, but she did ;-)
Naoko, many thanks for it. Also, I wish you every success with your book.