A Wikipedia conceptual option is a "Portal." The self-definition is:
"The idea of a portal is to help readers and/or editors navigate their way through Wikipedia topic areas through pages similar to the Main Page. In essence, portals are useful entry-points to Wikipedia content.
Portals are subject to the five pillars of Wikipedia, and must comply with Wikipedia's core content policies like Wikipedia:Neutral point of view, Wikipedia:No original research and Wikipedia:Verifiability.
At present, there are 115 featured portals, of a total of 548 portals on Wikipedia."
So, there is a "Texas Portal" is at http://en.wikipedia.org/wiki/Portal:Texas
at which you'll find there are also Portal for Houston, Dallas, UT-Austin, and U of Houston.
At that Texas Portal you'll fine a variety of search options. One of those options is the Category of "Texas Lists."