SI SHU ZHENGWEN [Commentary of the Four Books, Daxue and Zhongyong only]. Mid Qing Dynasty. Ten double pages, followed by nineteen double pages, traditionally bound in wrappers, with a handwritten red label reading 'Ni Ta Hia Su Shuw the Great Science of Con Fu Tsu this books [sic] is done by the Grand son of Con Tsu Sou', 25 x 14cm. 清中期 《四書正文》元經堂版