Fire insurance maps

Overview The Sanborn Map Company created large-scale maps of more than 12,000 American cities and towns during the late nineteenth and twentieth century to provide fire insurance agents with sufficient information to assess fire insurance liability. Maps show size, shape and construction of buildings, street names and widths, property boundaries, building use, and the locations of water mains, fire alarms, and hydrants, among other things. The Sanborn Map Company updated the maps to reflect new...