Pacific Northwest Bonsai
Clubs Association: http://pnbca.com/members.html
Eugene Bonsai Society: http://www.eugenebonsai.org/
The Bonsai Society of Portland,
Oregon: http://www.portlandbonsai.org/
American Bonsai Society: http://absbonsai.org/
Sunset Bonsai Club of Beaverton,
Oregon: http://www.sunsetbonsaiclub.org
Bonsai Gardening for Beginners: http://www.krhttp://www.kremp.com/bonsai-gardening-for-beginners-articles.htm