Thanks on the responses. Lets hope we can get others in Texas to post a bit of what they are finding also.
As for finding the places to hunt: we check the local city or county permits sections and get the 'demolition permits' issued. Useing that we visit the sites and get permission from the demo crews or the owners. The primary way we tend to locate good spots is with the eyeball. We see an old looking place or a place that looks deserted or a 'for sale' sign up, we jot down the address, check the tax records for owners and 'date built', then go from there. In the last few months I would estimate we have hunted at least 200 house demos. We usually hit at least two or three each time out. If we start getting a lot of really old stuff, we tend to stay and hunt it very closely. If we arent getting old stuff, modern clad and it is 6 to 8 inches down, then we tend to move on. Some of the lots have had 'fill dirt' put on them and spread around, some have had 'sod' put on them at some earlier date and that will put the older stuff at a significantly deeper level. A few weeks ago Mark and I hit a site in North Houston that was built on in the mid to late '40's, and it was absolutely loaded. A large home lot that had over 300 coins on it. 28 silver and over a hundred Wheats, along with old tootsie toy cars. We hunted that for a total of 13 hours each over three days. The lot right next to it had about 25 modern pennies and clad. Go figure!