"Fog follows the broad course of the Missouri above St. Louis. Now dredged and tamed, the once wild river no longer challenges modern boatsmen as it did [Meriwether Lewis and William Clark's] Corps of Discovery."

From the National Geographic book Lewis & Clark: Voyage of Discovery, 1998

圣路易斯的上空，浓雾笼罩着宽广的密苏里河。这条曾经充满野性的河流，现在已被制服，无法向对待（路易斯与克拉克）的探险军队一般，向现代的船上工作人员挑战。