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