Bubi Au Yeung's first storybook Treeson & Other Stories was released in TTF 2008. In addition to the standard book, there is a special limited edition box set featuring a Bookworm Baby Treeson, Treeson Greencard and the book in an illustrated box.
Crazy Label has 60 copies of the limited edition book set from the Taiwanese publisher. It is available for order through the Crazy Label store for $26 + shipping.