Du, Zhan., creator Er liu shu tang, kan. 杜旃. 二六書堂, 刋.
Qing Qianlong 6 [1741] 1741 清乾隆6 [1741]
China [China] [China] :
Jiashan Cao shi Er liu shu tang 嘉善曹氏二六書堂,