N.B. These background pages have generally not been updated since early 2008. Use the search engine on our home page to find more recent postings and links.
Many existing links, especially older ones, no longer work – a product of websites coming and going, urls being changed etc. We hope to clean up these background pages during spring 2010. In the meantime, we suggest you do what we will have to do: put titles, phrases or even sentences into Google and see if you can locate the original source in this way.