Chart the past–and present–of geographic exploration with this site commemorating Lewis and Clark




Commemorating 200 years since Meriwether Lewis and William Clark embarked on their pioneering expedition throughout North America, ESRI, a maker of geographic information systems (GIS) software, has developed a new web site called "Lewis and Clark 200." The site provides an introduction to modern techniques of exploration, as well as a detailed history of mapmaking--from the tools first used by the famous pair's Corps of
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