This is an unusual chart of Nantucket, Massachusetts, published c. 1919 by the U.S. Geological Survey.  Depicts the western part of the island in incredible detail with even individual buildings noted.  This is map is reduction of an early Geological Survey chart of Nantucket issued in 1887.
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<a href="https://en.wikipedia.org/wiki/United_States_Geological_Survey" class="extiw" title="en:United States Geological Survey">United States Geological Survey</a></div>
1919 (undated)
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