Wow! Amazing!

Have you read the Syntopicon by Mortimer J Adler?

It's right up your alley on this one. It's essentially this, but in 1965, by hand, with Isaac Asimov and William F Buckley Jr, among others.

Where did you get the books from? I've been trying to do something like this myself, but haven't been able to get good access to books under copyright.

Yeah, thinking a bit more here, you've created a Syntopicon. I've always wanted to make a modern one too! You can do the old school late night Wikipedia reading session with the trails idea of yours. Brilliant!

Really though, how can I help you make this bigger?