Let's use this corner of the forum to share online resources relating to the history of China's foreign relations.
One local resource are the papers/presentations shared at our February 2008 conference:
http://china.usc.edu/ShowArticle.aspx?articleID=970
The page above has links to the papers and also offers a video of Harry Harding's comments at the symposium. Revised versions of the papers will soon be published as a special issue of the Journal of American - East Asian Relations edited by Charles Hayford and published by Imprint.
Journal website