During the third week in July, Lewis had two new rivers to name. Previously he and Clark had used the names of the men, of Sacagawea, of relatives, or of unusual features or incidents. Now that they were past the Great Falls, they changed their references. It was as if they suddenly recalled that they had some political responsibility here, that no politician can ever be flattered too much or too brazenly, and that nothing quite matches having a river named for you.
