Blog Experiment

This is an experiment set up by coturnix at http://sciencepolitics.blogspot.com/ to see how quickly things run around the blogosphere:

There are estimated to be more than 20 million blogs in existence. Somebody somewhere knows the answer to my question. If every one of my readers (who also owns a blog) copies and pastes this post on their blogs, it should spread through the entire blogosphere over just a couple of days. Then, once somebody comes up with the answer to my question, the whole process repeats, with every blogger posting the answer. It should reach me in no less than a week. Let's try to do this. My question is:

What is the first original use of the phrase: "Note to Self"?

Does it come from a movie, comic strip, TV show ("Police Squad" comes to mind)? If you know the answer, post it on your blog and encourage your readers to do the same. Is the blogosphere such a powerful means of light-speed exchange of information? Let's prove that it is.

I suspect though, that it wont get quite as far out as he thinks it might, so I'd like to amend the experiment a bit and say add your blog URL to the bottom, both coming and going, so we can see just how far it went.

http://daveawayfromhome.blogspot.com/ and I have no answer.