Aiki News ., — 1991 . — 215 p. — ISBN: 4-900586-12-9 Pranin has researched aikido as has no one else–American OR Japanese–and this book is a goldmine of information that’s hard to get elsewhere . Whatever style of aikido you practice (and maybe jujutsu or the ken , too) this book will have information on it . A lot of the scuttlebutt on the acrimony between the various teachers of harmony , too . Highly recommended.