The Brazos and Colorado rivers, rendered as an urban transit network. Yes, there is a Colorado river in Texas, separate from the one in the southwestern US. And it’s one of the longest rivers in the country.
Click the image below to view/download a free PDF, which you may use according to the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. If you wish, you can pay me what you think my work is worth, via PayPal.