If you go to google.com , you can see that you can search their datafiles of january 2001. I found it interesting because you can see if many of your competitors today existed back then or not. You can use this as a marketing tool. Enjoy!
It's been available since their 10th anniversary, more than a week ago..! However.. thank you for posting
Yes it's very helpful to find "authority" sites that have substantial amount of credibility due to the fact that they have tremendous old age. I don't know how long they'll have it up for, so use it now.