Sanborn Maps, UT Perry-CastañedaThe Sanborn Fire Insurance Maps Online provide a searchable database of the fire insurance maps published by the Sanborn Map Company. Texas Digital Sanborn Maps provide detailed property and land-use records of Texas towns and cities from 1867 to 1970. Details on buildings include outline, size and shape, construction materials, height, use, windows and doors, street and sidewalk widths, boundaries and house numbers.