https://japanesebonsaipots.net – A literal treasure chest of bonsai pottery information (highly recommended for sourcing quality Japanese and Chinese bonsai pottery at all price ranges)
http://www.magiminiland.org/BigPicture/Pots.html – Great information about bonsai potters here in the U.S. and abroad. Plenty on the site to get lost in!
Brandywine Bonsai Society – Additional information about American bonsai pottery artists
3rd National Juried Bonsai Pot Exhibition – great photos of fantastic American bonsai pottery
https://adamaskwhy.com – Information about tropical bonsai and great pictures of bonsai pottery and tree/pot compositions. A damn funny and informative read as well!