Assiniboin River, Manitoba, Canada (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
History of the Expedition under the Command of Captains Lewis and Clark / To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"‘Mr. M‘Cracken, the trader, set out to-day on his return to the British fort and factory on the Assiniboin river, about one hundred and fifty miles from this place.’ This passage clearly names the Assiniboin River along with a British trading post."
History of the Expedition Under the Command of Captains Lewis and Clark: To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"…if he found that Mr. Henry was on the Assiniboin river, to go thither and deliver him a letter…"