A website that I recently found is dedicated to historic maps. Aptly titled Historic Map Works, the site allows you to look at scanned images of old maps. After you land on the home page of the site, type the name of your city and state in the search box. You can look through the results to see if there are any maps available for your community. Most of the maps I looked at were indexed so I could see if the individual communities I am researching were listed. Looking at maps can help you determine if city boundaries were changed in your community through the years. An added bonus is that some maps indicate the existence of a structure on the lot, helping you to pinpoint when your house may have been built.