where do OneNote notes go?

Yesterday I wrote a blog entry while sitting in LAX waiting for my connecting flight to NYC. As I didn't have net access (the Starbucks in LAX apparently don't have the t-mobile hotspots), I wrote the entry in Microsoft OneNote for posting later. So, here I am in a Starbucks in NYC, and I cannot find the OneNote note! I've searched from inside OneNote for the note, I've even searched the hard drive for it, and I can't find it. Can anyone tell me where it went and how I recover it?

BTW, t-mobile WiFi access is USD$0.10 for one minute on a day pass. But you get the first day for free when you sign up using the Starbucks promotion code!