The scope of OPIUM IN CHINA is roughly 1830 through 1930. 

It takes into account events leading to and culminating in the first Opium War and its concluding Treaty of Nanking.  It moves onward to include the second Opium War and its concluding Treaty of Tientsin.  Also included are the establishment of Treaty Ports; the Taiping Rebellion; the Boxer Rebellion and, drug control efforts of the Chinese Maritime Customs Service.  In as much as it can, the Collection also gathers resources related to medicine, trade, and other issues.