American Okinawan Karate Association - Organization established under Tatsuo Shimabuku, Steve Armstrong, and Harold Mitchum. Resources include history, events, newsletters, membership details, merchandise, and contact information. - http://www.aoka.org/
International Isshinryu Karate Association - Worldwide support for the style. History, instructor profile, news, events, dojo list and registration. - http://www.iika.com/