I have been to Oklahoma, but I have never been to Texas. I am sure I will make it there someday. I have always wanted to visit Austin because of the huge live music scene, but my brother in law says part of the reason he loves Austin is because it is the most Un-Texas city in Texas :) That is very interesting about the history of it leaving and then joining. I read a book several years ago called "How the State Got their Shapes". It was a really good read. It mostly came down to rivers but there were some other interesting stories.