The present January 2005 magazine issue (vol.9 Issue 12) of TKD and Korean Martial arts (British magazine) has a good history of Korean arts.
Historical facts from Japanese scholars reveal how Sam Rang warriors spread the art of Yusul to Japan to be the precursor of Jujitsu and Aikido.
The above fact has already been researched by GM Kimm of Hanmudo.I followed him to Sam Rang castle in Korea in 1998 during his research.
So for martial arts followers , get this issue and know our roots.
I believe more info will be produced in GM Kimm's about to published "History of the Korean arts"
Dr.Dennis Chua
Hanmudo Singapore