Founded in 1867 by D.A. Sanborn, the Sanborn Map Company was the primary American publisher of fire insurance maps for nearly 100 years, repeatedly mapping towns and cities as they changed. The maps provide a wealth of information, such as building outline, size and shape, windows and doors, sreet and sidewalk widths, boundaries and property numbers. Plans often include details on construction materials and building use; and also depict pipelines, railroads, wells, water mains, dumps and other features.
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