Changes

*[https://www.bris.ac.uk/history/customs/ancestors/directories.html Online Directories] Chinese Maritime Customs Project, University of Bristol: Department of History.

*[http://books.google.com.au/books?id=-9QMAAAAIAAJ&pg=PR3 ‪''The Treaty Ports of China and Japan: A Complete Guide to the Open Ports of Those Countries, Together with Peking, Yedo, Hongkong and Macao. Forming a Guide Book & Vade Mecum for Travellers, Merchants, and Residents in General'']‬ by William Frederick Mayers, N B Dennys, and Charles King 1867. '''Note''': The maps have not been filmed. Google Books

*[https://archive.org/details/cu31924023226065 ''China, Past and Present''] by Edward Harper Parker 1903 Archive.org

*[https://archive.org/details/chinamartyrsof1900fors ''The China Martyrs of 1900. 
A Complete Roll of the Christian Heroes Martyred in China in 1900, with Narratives of Survivors''] 
compiled and edited by Robert Coventry Forsyth 1904 Archive.org

*[http://archive.org/stream/whoswhoinfareast00hongrich#page/n3/mode/2up ''Who's Who in the Far East, 1906-7, June''] Archive.org

*[https://archive.org/details/twentiethcentury00wriguoft ''Twentieth century impressions of Hong-kong, Shanghai, and other Treaty Ports of China: their history, people, commerce, industries, and resources''] by Arnold Wright 1908 Archive.org

*[https://archive.org/details/cu31924022973196 ''With the Chinks''] by Daryl Klein, 2nd Lieutenant in the Chinese Labour Corps, 1919 Archive.org

*[http://archive.org/stream/cu31924023172640#page/n5/mode/2up ''Record of Services Given and Honours Attained by Members of the Chinese Customs Service, War 1914-1918''] Published 1922, Shanghai. Archive.org