The links below lead to brief introductions to various types of sources available for research in late imperial Chinese history, including material online as well as material held in HYL and other libraries. The aim here is to be comprehensive in inclusion, not exhaustive in description. More information on all of these materials, and much else besides, is to be found in the pages of Endymion Wilkinson's Chinese History: A New Manual, Fifth Edition (Harvard University Asia Center, 2017). Authorized users are encouraged to add their own entries in the appropriate sections.