Spade Farm Bridge (VT/45-01-02) collection, 1906-2008 (bulk 1960-2008).
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United States Geological Survey
http://n2t.net/ark:/99166/w6z64hnt (corporateBody)
The United States Geological Survey, a part of the Bureau of the Interior, was created by Congress in 1879 for the purpose of the classification of the public lands, and examination of the geological structure, mineral resources, and products of the national domain. As part of its survey, study and classification of the geology of the United States, the department has produced a vast photographic record, now housed in the U.S. Geological Survey Library in Lakewood, Colorado. The USGS photographi...