Do check out the Silk Road Project’s children’s reading list (from the Silk Road organisation) of book titles on the Silk Road.
Also there is a free SILK ROAD ENCOUNTERS EDUCATION KIT comprising a teacher’s guide and an EXCELLENT sourcebook which you can download from this page. Teachers will find the sourcebook (designed for the classroom) an invaluable teaching resource – not only for general information about the Silk Road lands, but also about the invention and spread of paper and other technologies, Buddhism, etc. Archaeology has made a lot of what we read and knew in schools obsolete, this is a good source for updated and accessible information for our children. It can work as a readaloud for the parent or as an assigned reading. Highly recommended!
Also not to be missed, is, the BBC (radio) program In Our Time recently had a recent program on the Silk Road. Listen to the 45 minute Podcast at http://www.bbc.co.uk/programmes/b00p315t. Good stuff. The same page has a booklist for further reading (for adult) on the topic.