I recently read about Linkpendium on Google + and was amazed at the wealth of Genealogical information that can be found by using them. They also have a state by state search engine that will let you search up to 2,648,502 pages of free genealogical data with a single query. Give it a try it is very useful to anyone doing Genealogical Research or research for Family History. If you want more information about this website visit their About Us page or visit them out at www.linkpendium.com.
If you as I am, are doing South Texas Research here are some quick links that can be found at Linkpendium. Unfortunately they did not have any Mexican resources listed.
South Texas Counties
Hope that you all find them useful!!!