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GeographyMapping Unknown Lands
Indian Spatial Concepts
Formal Navigation by Lewis & C
 

The Upper Missouri Drainage



his map was drawn around 1802 by Old Swan, a Blackfoot Indian. It shows the drainage of the upper portions of the Missouri River from the Continental Divide (shown by the straight line at the top of the map). While some pictographs appear on the map, the general mapping pattern is more abstract, with line symbols to represent rivers.

--John Logan Allen

Indian Spatial Concepts
Formal Navigation by Lewis & C


 
From Discovering Lewis & Clark ®, http://www.lewis-clark.org © 1998-2014
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)