Tom wrote:"I thought you good folks at TORN might be interested in this link to a page at the Internet Sacred Texts Archive site that has compiled a list of links to source materials that Tolkien drew from when creating the world of his Middle earth. "
The site encourages you to buy their CD-Rom, which looks rather beautiful. Personally I think they miss a heck of a lot of stuff that influenced Tolkien. If the topic interests you, check out my ramblings on Tehanu's Notes