Covello, Vincent T.

Vincent T. Covello has studied the art of suiseki for over twelve years and has lectured extensively on the topic. He is considered by many to be the foremost authority on suiseki in the United States

Yuji Yoshimura is one of the world's leading experts on bonsai, Japanese horticulture and miniature landscapes. He has lectured throughout the world and has published numerous books and articles on bonsai in both Japanese and English.