Sanborn Maps

Years ago, a company called Sanborn produced maps across the country to allow insurance companies to estimate their risks when issuing fire insurance. They were extremely detailed and updated every couple of years as the United States exploded in population, and also very expensive. The Library of Congress has digitized many of these maps and made them available to the public, and I did a dive on the Lockardugan estate to see the changes in our immediate neighborhood over the years. This map from 1925 was produced right after our house was put up, and shows the house but not the garage, which was put up later. The 1919 survey only shows the north side of Frederick Road across the street from us, but neglects everything to the south, most likely because the land our house sits on was still the front pasture for the Summit Mansion at that time.

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