Created to assist fire insurance companies as they assessed the risk associated with insuring a particular property, Sanborn Maps provide information on more than 12,000 American towns and cities. Maps for Oklahoma cities go back to 1894. These maps includes details such as the outline of each building, the size, shape and construction materials, heights and function of structures, location of windows and doors, street names, street and sidewalk widths, property boundaries, building use, and house and block numbers.

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