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With great precision, an engraver carefully cuts away small ribbons of copper to create the contour plate for a US Geological Survey topographic quadrangle....
Engraving a Map
Detail of a “culture” separate, which was represented in the color black on a USGS topographic map....
Copper Map Plate Detail
In the past, each USGS topographic map typically required 3 individual lithographic stones for printing, one for each color shown on the map....
Lithographic Printing Stones for Map-making
A portion of the engraving on the plate used to print points, lines, and text in black ink.
Engravings on the plate are left-to-right reversed. This plate was cleaned and treated to improve the visibility of the engraving. The plate was used to print the Washington [D.C.] and vicinity, 1:31,680-sca...
Copper Map Plate Detail
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Meandering River in Complex Landscape in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Meandering River in Complex Landscape in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Meandering River in Complex Landscape in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Landscape Mosaic in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Landscape Mosaic in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Landscape Mosaic in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Meandering River in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Landscape Mosaic in Northern Paraguay
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Old River Beds Along Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Old River Beds Along Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Old River Beds Along Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Paraguay River
Paraguay is located at the confluence of a number of globally important ecoregions, namely the upper Paraná Atlantic Forest, the Cerrado, the Argentine Mesopotamian Grasslands, the Chaco (Humid and Dry) and the Pantanal. The southward-flowing Paraguay River divides the country into two distin...
Old River Beds Along Paraguay River

 

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