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Celestial Navigation
Mouth of Marias River
Funded in part by a grant from the National Park Service, Challenge-Cost Share Program.
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From
Discovering Lewis & Clark ®,
http://www.lewis-clark.org
© 1998-2009 VIAs Inc.
© 2009 by The Lewis and Clark Fort Mandan Foundation, Washburn, North Dakota.
Journal excerpts are from
The Journals of the Lewis and Clark Expedition
, edited by Gary E. Moulton
13 vols. (Lincoln: University of Nebraska Press, 1983–2001)