The Maritime Customs Service of China (1854–1949) compiled and produced a huge number of publications from 1860 to 1949. These publications fall under six series: Statistical Series, Special Series, Miscellaneous Series, Service Series, Office Series, and Inspectorate Series. Out of these, the Statistical Series boasted the largest output. This collection incorporates the core of the Statistical Series, including Returns of the Import and Export Trade, 1859-1866; Returns of Trade at the Ports in China Open by Treaty, 1867-1881; Returns of Trade at the Treaty Ports and Trade Report, 1882-1919; Chinese Version of Return of Trade and Reports of Trade (missing 1885); Foreign Trade of China, 1920-1931; The Trade of China, 1932-1948 (bilingual); Decennial Reports on the Trade, Industries, etc, of the Ports Open to Foreign Commerce, and on the Condition and Development of the Treaty Port Provinces.