China Dimensions Data Collection
This collection includes a variety of socioeconomic data, such as county-level geographic information system(GIS) databases, presented at a scale of 1:1,000,000."
Antique Maps (from the Hong Kong University of Sicience & Techonology Library)
The collection includes more than 230 maps, charts, pictures, books and atlases. It represents almost all samples of China maps produced by European cartographers from the 16th to 19th centuries. This cartographic archive vividly records the long history of cross-cultural exchanges between China and the West.
Chinese civilization in time and space by Academic Sinica, Taiwan. Extremely useful web site linked map and times. Maps are based on 中国历史地图集。
Maps of Asia (The Perry-Castañeda Library Map Collection, University of Texas at Austin, USA) The maps are mainly produced by the US Central Intelligence Agency. Shaded relief maps are available for China (and parts of it), Taiwan, Hong Kong, Macau, and Singapore (and many other Asian states and regions). For some parts there are even political, economic, demographic, and still more maps.
數位方輿 Reading Digital Atlas A collection of maps from the Ming and Qing Dynasty from libraries, including Library of Congress, British Library, British Museum Archive and various institutions in Japan.