Daito-Ryu Aikijujutsu Headquarters
https://www.daitohryu.com/

Daito-Ryu Aikijujutsu Katsushika Branch (Former Headquarters)
http://www.daito-ryu.org/jp/

Japan Traditional Martial Arts Association
http://www.nihonkobudokyoukai.org/

Japan Traditional Martial Arts Promotion Society
http://kobushin.jp/