Below are internet resources that can assist in researching and using the Sanborn Fire Insurance maps including databases, websites, and GIS projects.
The subscription resources marked with a padlock are available to researchers on-site at the Library of Congress. If you are unable to visit the Library, you may be able to access these resources through your local public or academic library.
Geographic Information Systems (GIS) allow for the creation, visualization, and analysis of spatial data. Modern maps are created and maintained through the use of GIS. These projects combine historic Sanborn sheets with GIS technology to help better analyze and interpret these maps.