This site by the Bristol University offers searches of 60,000+ names of the men and women of many different nationalities, professions and ages, who lived and worked in China from the 1850s and 1940s. These records include government department lists, legal and diplomatic records, cemetery lists plus from research undertaken for projects on the history of modern China and of the foreign relations of China.
There is also a sister site Historical Photographs of China, which provides free access to 20,000 digitised photographs of China that illustrate the times and places in which the men and women lived and worked.
There is also links to published business and residents’ directories published in China or Hong Kong 1842-1930s plus links to scanned extracts in PDF format, of lists of foreign residents in China.