Entering Idaho

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August 12, 1805

At the distance of 4 miles further the road took us to the most distant fountain of the waters of the Mighty Missouri in search of which we have spent so many toilsome days and restless nights. Thus far I had accomplished one of those great objects on which my mind has been unalterably fixed for many years. Judge then of the pleasure I felt in allaying my thirst with this pure and ice-cold water… ...we proceeded on to the top of the dividing ridge from which I discovered immense ranges of high mountains still to the west of us with their tops partially covered with snow. I now descended the mountain… Here I first tasted the water of the great Columbia River.

--Meriwether Lewis.