A collection of primary source materials linked to a map that explore the history of China from 1200 B.C. to 1931. This is a world map with links on other continents as well, so zoom into China and click on a numbered circle. A popup appears showing one or more thumbnails and the location that the material references or where it is located. Click on a thumbnail to go to a page with descriptive information about it. Each description has an audio feature for listening to the text. There is also a link for downloading the item.