Just to let you Ryukyu Kobudo buffs know, one of my mentors in the Ryukyu martial arts, Murakami Katsumi Sensei, has just released his first English book, entitled "Saijutsu : Traditional Okinawan Weapon Art" through Tuttle.
Having been fortunate enough to have been privy to the original manuscript, I can tell you that this is a great book, and one that
should be owned by any and all Okinawan martial arts enthusiasts.
You can find it by doing a title search under "Saijutsu" here: http://www.amazon.com
Yours in Karatedo,