Lets see here

Chrono Trigger....PLAYERS GUIDE!
FFIX(was of money)
Xenosaga
Legend of Mana
FFIV/Chrono Trigger
Chrono Cross

I also have some art books
Warcraft III
Tales of Symphonia
Soul Calibur 2

More than just art but since I can't read Japanese....
Xenogears: Perfect Works
Xenosaga: Offical Design Materials