I know it's not. Here are pictures of my very old stone house! http://www.flickr.com/photos/all_moi_varmints/sets/72057594047832912/ We're out in western Chester County, part of a huge parcel that Henry Marsh got from the Penn brothers. I have been trying to find out when the house was built, but there were three stone houses on the parcel and it's almost impossible to find out which one was which! We believe it was built prior to 1800 but don't hold me to it....and that tree in the front is really old, too.... Lynn >>Don't think that this is anything like an exhaustive list. These are mostly high-profile historic houses. There are hundreds more anonymous stone (and frame) houses dating back to Pennsylvania's earliest settlers. Mark<<