Master Yong Chin Pak's website. He is the Master Hapkido Instructor at Iowa State University and Iowa Hapkido's Master Instructor. The
site contains a biographical overview of his achievements.
State of Iowa Black Belt Association website. SIBBA is the organization that all Iowa Hapkido black belts belong to. The association is
not just for Hapkido black belts, but also for Taekwondo and Judo black belts.