I was turned on to this site and it is pretty amazing!!! http://mapper.acme.com This mapping devise is very very acurate! Type in a location and use the map to get the crosshairs on anything, a building, or house... once it is in the crosshairs, click topo and it will drop that location onto an older (60's I think) topographical map. Or, do it the opposite way, use the topo to find a struction and click back to satellite and you can see if the house is still there or gone. The pinpoint I have found to be very accurate within a few feet. If you all know about this site, cool, but if you don't you will want this in your researching arsenal!!!