 Viewed March 22, 2014. 220px|<center> Lewis and Clark Expedition1954 issue 220px|<center> John C. Frémont, Rockies1898 issue 220px|<center>John Wesley Powell, Green and Colorado Rivers1968 issue The Lewis and Clark expedition was celebrated on May 14, 2004, the 200th anniversary of its outset depicting the two on a hilltop outlook.
<coherence>  Viewed March 22, 2014. 220px|<center> Lewis and Clark Expedition1954 issue 220px|<center> John C. Frémont, Rockies1898 issue 220px|<center>John Wesley Powell, Green and Colorado Rivers1968 issue The Lewis and Clark expedition was celebrated on May 14, 2004, the 200th anniversary of its outset depicting the two on a hilltop outlook.
 Viewed March 22, 2014. 220px|<center> John C. Frémont, Rockies1898 issue 220px|<center>John Wesley Powell, Green and Colorado Rivers1968 issue The Lewis and Clark expedition was celebrated on May 14, 2004, the 200th anniversary of its outset depicting the two on a hilltop outlook.