The Shihan-Ryu Institute
Dedicated to the advancement of the traditional martial arts and their values.
http://www.shihanryu.org

Kokusai Dentokan Bugei Renmei
Founded by Roy J. Hobbs as a means of providing instruction, and certification, in the various martial arts of Japan he has studied. Includes some history, details on katas, and membership information.
http://www.dentokanhombu.com

Shudokan Martial Arts Association
Promoting traditional Budo/Bujutsu within its divisions of Judo, Karate-do, Aikido, Jujutsu, and Iaido. Membership details, ranking system, articles, publications and photographs. [Richmond, CA]
http://www.smaa-hq.com/

Dai Nippon Butoku Kai
Information on the organization, originally established in Kyoto Japan 1895 under the authority of the Ministry of Education and the endorsement of His Royal Highness, Meiji Emperor to solidify, promote, and standardize martial disciplines and systems throughout Japan.
http://www.dnbk.org/