I thought that I would share with the following site. Some libraries have their card catalog on-line. It may help shorten your search if you plan to pop in on a library in a town that you want to visit and hoping that they may have a book. The Rio Grande Valley Library ABQ, NM) system has a genealogy library - it is small but it has more books that the Texas State Library at Austin, Texas. The Texas State Library has more books under a specific surname. Don ([email protected])