• American Bonsai Society
• Bonsai Clubs International
• Bonsai in Asia Guide Book
• Bonsai Societies of Florida (Florida, USA)
• Golden State Bonsai Federation (California, USA)
• Mid America Bonsai Alliance
• National Bonsai and Penjing Museum (District of Columbia, USA)
• National Bonsai Foundation (District of Columbia, USA)
• Mary Miller, publisher of Bonsai with Tropicals
• Colin Lewis Bonsai (author and lecturer, UK)
• Gardenweb Bonsai Forum
• Bonsai North Shore (Guy Guidry, Louisiana, USA)

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