Slow me (this service has been around since 2005) but I finally ran across a Tolkien related book on Amazon that is available for their "Amazon Upgrade" service. What this means is that when you purchase the physical book, if you pay a small additional fee you can have unlimited online access to the book, including making annotations and highlights, print pages, cut and paste, etc. Essentially, a very useful tool if you need to do searches for keywords or other research using one of the books as a source. Unfortunately, there are not that many interesting books in the program yet (the publisher has to agree to participate in the program, and most Tolkien related publishers are not signed up.) What I did find available in a search were the following titles: