Records of the U.S. Geological Survey. 1839 - 2008. Reference Maps
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Gannett, Henry, 1846-1914
http://n2t.net/ark:/99166/w64r8j26 (person)
Henry Gannett (b. August 24, 1846, Bath, Maine – d. November 5, 1914), American geographer who is described as the "Father of the Quadrangle" which is the basis for topographical maps in the United States. ...