Also, if anyone is interested in knowing, possibly the second oldest English-language Kung Fu manual would be the book "Kung-Fu, Original Sil Lum System" by T. Y. Wong, which was published in 1962. This is the companion volume to the previously mentioned book which Wong Sifu authored with James Lee. This one was published after Lee had left Wong's school to train with Bruce Lee.

This volume concentrates on the combat applications of the art. It teaches the two-person forms for the seta which are taught in the first book (Lin Wan Kune and Mang Fu Har Shan), as well as staff fighting and "soft hand stunts" (breaking bricks with the palm).

It's actually very surprising that Wong Sifu was so open and included so much in such great detail in his two volumes on this Sil Lum system. Since this particular system is really quite rare in the US, I for one am very glad that he did so....