San Francisco Bay Area martial arts supplies

Kungfu Direct (order online or visit the Sunnyvale store)

Tai Chi Tranquility (organic Tai Chi clothing and shoes) 

Hunyuan Tai Chi - San Francisco Bay Area 

Master Zhang Xuexin (Master Zhang has retired from public teaching)  

Hunyuan Tai Chi - International 

Pedro Valencia, Spain. See also YouTube channel here

Hunyuan Tai Chi - US and Canada 

Justin MeehanSt. Louis

Yang YangCenter for Taiji Studies, Champaign, Illinois

Chen Zhonghua, Edmonton, Canada

Other Tai Chi sites of general interest   

The Feminine Tao (excellent site for multiple Tao Te Ching translations, including original Seal Script)