FightingDirectory.info is a great resource containing links related to Chinese martial arts, Korean martial arts, Japanese martial arts, martial arts services, aikido, karate, taekwando, muay thai, chung moo doe, tang soo do and more.
Black Bear Society Martial Arts
Based in Wausau, Wisconsin. Martial arts as a tool for self-protection and a vehicle for personal development. Class information, instructor bios, and articles.
http://www.blackbearsociety.com
Information on both traditional and non-traditional types of Ninjutsu, Jujutsu, Aikijutsu and Capoeira. Contains dojo details, locations, events, seminars, instructor profiles, photo gallery, links and store.
Articles, training videos, and seminars dealing with Tew Ryu Ninjitsu, an American ninjitsu system in a non-traditional program. Also sells martial arts supplies.
Sato Ryu Koga Ryu Ninjutsu. Authentic Koga Ryu Ninjutsu Instruction by the Soke of the Sato Ryu, Soke Yo Hiroshi Sato. Son of Kenneth Sato also known as Toshitori Yamashiro a Koga Grandmaster.