For example, Du Bois in China or Britta Fischer, U.S.-China Peoples Friendship Association Photograph Collection, 1978, W. L. Holland Papers, 1922-2008, Agnes Smedley Photograph Collection, and others.
Use this database to search for collections on your topic. View the finding aids to see exactly what kinds of materials are in the files. Click on the Advanced Search button and then do a subject search on China. You may also add another keyword to get at the topic you want to research.