Cartography and the making of maps is the focus of this online exhibiiton. This site features online access to Lewis and Clark maps and other primary sources, and provides related activities and lesson plans. Students will learn the art of map making by examining the methods Lewis and Clark used to make maps during their famous journey of discovery.  Exploration maps from both before and after their voyage show how their efforts fundamentally changed knowledge of the geography of the West. Learning activities imbedded within the exhibition as well as fully developed lesson plans are also included.