The Federation of British Bonsai Societies

The European Bonsai Association

Bonsai Clubs International

World Bonsai Friendship Federation

UK National Bonsai Collection

Bonsai Focus

Bonsai Empire

Japanese Bonsai Pot Chop mark Blog

Tokoname bonsai chop marks

Omiya Bonsai Village

Japan Shohin Bonsai Association

Omiya Bonsai Art Museum

Nippon Suiseki Association

Bonsai in the Kagawa Prefecture