So Coilhouse magazine has an article online about the Kowloon Called City. Has a pretty decent potted history of the place plus some very nice photographs. The links provided are quite good as well - the Kowloon Walled City site especially, I know that Demonseed Elite and myself have linked to the place in past threads when the Kowloon Walled City was mentioned. Hell, even the clip from Bloodsport that they linked to gives you an idea of what the atmosphere in the better parts was like.