I been using a college site that has historical maps as well as a few arial maps and superimposing some of them onto Google or Bing maps. It's been a pain and wish there was a program that could do it automatically. It does help if you know where to look to see the roads that no longer exist. But even then, the place I went a few weeks ago with Brian, that Dan took him to, are not on the 1868 map I got so that was even more research on his part. There was an interesting find on the arial image from the site I had, but It's a bird's eye view so It will be tricky to pinpoint on the modern map where this place used to be in 1908. Btw, thanks for the link, however does it zoom to clearer pic when you have an account with the site?