The Brennan
translation is titled The Taiji Boxing Classic and is from a group of
texts headlined An Outline of Taiji Theory. It is an appendix to a
compilation on Taiji by Chen Yanlin published in 1943. Link here.
The Wile
translation is from the book Yang Family Secret Transmissions (1983). It
is titled Wang Tsung Yüeh’s Treatise on T’ai-chi ch’üan.
The
Christensen translation is from the book Tai Chi – The True History and
Principles (2016). It is from the Li family manual, said to have
been dictated by Li Helin in 1787. For further details, I suggest you buy the
book.
The Liang
translation is from the book T’ai Chi Ch’uan For Health and Self-Defense
(1974,1977). It is titled T’ai Chi Ch’uan Treatise. He attributes it to
Wang Chung Yueh of the Ming Dynasty
The Liao
translation is from the book T’ai Chi Classics (1977,1990). It is titled
Treatise by Master Wong Chung-yua (ca. 1600 C.E
I have copied the Chinese text from Brennan’s website and put it at the end of this document.