Old Glory

Wow! Too much good info to try and cram it all in one post so I'll give you links to the info.

A short History of the American flag.

Two different accounts of the specific flag that was first called Old Glory here and here.

The history of the United States maritime flag or Jack. And here is a link to an image of the first naval jack. The "Don't Tread on Me" naval jack was "reinstated" in recognition of the current War on Terror.

And last but not least, rules from Title 4 of the US Code concerning the US flag, how to display the flag, how it should or should not be used and other interesting stuff.