have you been checking craigslist?? just recently, there was an anvil on there, that im pretty sure was in Houston. it was being advertised as a Columbian anvil that weight more that 100 pounds. but wait, it gets better, the price was 200 dollars! there have been many other anvils, forges, and blacksmithing tools on craigslist that were in the Houston area. also be on the lookout at the scrap yard, for railroad track large chunks of steel or if your real lucky a "real" anvil. this has been said many times before, but ill say it again, the London pattern anvil has only been around for a couple hundred years, and before that smiths used blocks of steel, or what ever they could find. don't give up, eventually you'll find one.
Littleblacksmith