Map of Clark's River [present-day Bitteroot-Clark Fork-Pend Oreille combination of rivers], [April 17, 1806], A0289-33188. Missouri Historical Society Library and Research Center.

Map of Clark's River [present-day Bitteroot-Clark Fork-Pend Oreille combination of rivers], [April 17, 1806], A0289-33188. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/9004 Accessed September 19, 2024.