The IDP site ( International Dunhuang Project) is by far the best site on the World Wide Web with regard to the history of the Silk Road.
Most recently the UK team of the IDP started a Blog, Flickr, Facebook, Delicious and YouTube.
The most recent publication are videos from a field trip in 2008 on the track of Aurel Stein:
"Over a century ago the Hungarian scholar Marc Aurel Stein set out on what was to be his first of four expeditions to Chinese Central Asia. He was in search of ancient civilisations, almost forgotten to history yet with ruins which could potentially provide archaeological evidence of the rich cultural mix engendered by the opening of the international trade routes across Eurasia – the Silk Road. Stein’s expeditions and finds exceeded his expectations: he uncovered hundreds of archaeological sites, discovering over 50,000 artefacts. He also mapped his journey and the sites and took over 5,000 photographs, recording the sites, people he encountered, everyday life, officials and the changing landscape. In November 2008 members of a joint project between IDP and the Xinjiang Institute of Archaeology in China (XJIA), retraced Stein’s footsteps to retake his site photographs a hundred years on. Read more about IDP's field trip in IDP News Issue 32.
Videos of IDP's field trip are now available on our YouTube channel. Footage is available of sites including Miran and Endere. "
Source: IDP UK