Hi Mr. Istopher:
Great idea! I hope you get support.
There are many books and other sources I would recommend, but, besides the two you have mentioned, almost all of them come with qualifications of some sort.
For general information on Taijiquan principles, I would add:
1. The T'ai Chi Boxing Chronicle by Kuo Lien-Ying. I am unclear about Kuo's precise lineage and all the aspects of his Kuang P'ing style, but most of what he says seems very good, even from the traditional Yang perspective.
2. On the web, I would recommend two articles by Zhang Yun, as long as one keeps in mind that he represents a different style. One is “Zhan, Nian, Lian, Sui--Four Important Skills for Push Hands and Fighting.” You can find it at http://www.geocities.com/ycgf/arti_znls.htm.
The other article is “Taiji Thirteen Postures,” which can be found at http://www.geocities.com/ycgf/arti_znls.htm
Both articles can be found along with other material I have not completely explored at http://www.geocities.com/ycgf/articles.htm
Zhang Yun seems to write in a very clear and non-partisan way, at least as seen from a traditional Yang perspective. The only material I have found so far that he discusses in detail and that might be controversial are his links between Taiji principles and traditional Chinese medical approaches, which I believe the Yang family has never dealt with much and maybe even has actively discouraged. Any clarification on this point from others would be welcome.
3. For good perspectives on the history of Taijiquan and some of the classic texts, I would recommend Lost T’ai-chi Classics form the Late Ch’ing Dynasty.
4. For overall information about Taijiquan, I would recommend Peter Lim’s website at http://web.singnet.com.sg/~limttk/
5. I almost forgot to mention the material on this website, which I hope everyone reads periodically. For Taiji principles in particular, I would recommend the material in the Twenty Character Motto and the Description of the Palm Methods.
More sources may come to mind later. Again, there are many I would recommend, but I do not have time now to explain my reservations, all of which do not necessarily relate to authenticity, correctness, etc.
AudiI removed some periods which made the links fail - Jerry
[This message has been edited by JerryKarin (edited 02-02-2002).]