Of all the westerner who made it to Yunnan, Joseph Francis Rock was undoubtedly one of the most eccentric. A self-educated botanist and anthropologist, a recluse, a photographic pioneer, a lousy geographer and even worse writer: National Geographic's 'our man in China' left us with a string of (heavily staff-edited) NG articles and a few (almost unreadable) books. Here is our list.