I want these books about Taijiquan(Tai Chi), have ever found two of them a bookstore in my living city.
"Master Lams Step-by-Step Tai Chi"
by Master Lam Kam Chuen
"Complete Illustrated Guide to Tai Chi : a Step by Step Approach to the Ancient Chinese Movement"
by Angus Clark
This is just my personal impression, it seems like that all of them were published in UK or another countries.