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1by Thomas, Cowperthwait & Co.“... by hachures). Prime meridian: Washington....”
Published 1850
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2by Boynton, G. W.“... (with relief shown by hachures). Prime meridian: Washington....”
Published 1838
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3by Dussieux, L. (Louis), 1815-1894“... of water, and geographic features are noted (with relief shown by hachures). Prime meridian: Paris....”
Published 1856
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4Published 1744“.... Northwestern portion of North American continent undefined. Prime meridian: Ferro. Includes names of explorers...”
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5“... geographic features are marked (with relief shown by hachures). Prime meridian: Isle de Fer....”
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6
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7“... shown by hachures and spot heights as well as depth by form lines). Scale [ca. 1:34,957,000]. Prime...”
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8Published 1885“...). There is text beneath the map labeled "Questions on the Map." Prime meridians: Greenwich and Washington...”
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9
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