The most heavily used collection in the Geography and Map Division depicts entire North American cities and towns in detail — right down to the windows, doors, sprinkler systems and fire alarms in their buildings.
The Sanborn Fire Insurance Maps, a collection of large-scale, building-level maps, depict the commercial, industrial and residential sections of some 12,000 cities and towns in the United States, Canada and Mexico from 1867 to the present.
Source: Library of Congress Magazine – May/June 2021 – LCM_2021_0506.pdf
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