Video Crips
Rafu Shimpo----Ken Azuma

Associations
The Golden State Bonsai Federation (GSBF) (Oakland)
GSBF Bonsai Garden at Lake Merritt

Neighborhood clubs
Midori Bonsai Club (San Jose)
Kusamura Bonsai Club (Palo Alto)
Diablo Bonsai Club (Danville)
Santa Cruze Bonsai Kai
Yamato Bonsai Kai

FYI
USDA ARC: The Ancient Arts of Bonsai and Penjing.
All Japan Shohin Bonsai Association
World Bonsai Convention 2017