Chinatownology has a nice site on Chinatowns around the world: http://www.chinatownology.com/chinatowns_of_the_world.html, the following are those not included in their websites:
North America:
Latin America:
Europe:
Thes following are selected resources from University of British Columbia Library's page on Asian Canadian Studies:
The Chung Collection (The University of British Columbia): This website connects you to the Wallace B. Chung and Madeline H. Chung Collection at the UBC Library, which contains items in various formats related to early British Columbia history, immigration and settlement, particularly of Chinese people in North America, and the Canadian Pacific Railway Company.
Chinese-Canadian Collection (University of Victoria): This collection contains documents drawn from the fonds of the Chinese Consolidated Benevolent Association held in the University of Victoria Archives. Most items are handwritten in traditional Chinese script with English translations.