The origin of the word Oregon is not known for certain. One theory is that French Canadian fur company employees called the Columbia River "hurricane river" le fleuve d'ouragan, because of the strong winds of the Columbia Gorge. George R. Stewart argued in a 1944 article in American Speech that the name came from an engraver's error in a French map published in the early 18th century, on which the Ouisiconsink (Wisconsin River) was spelled "Ouaricon-sint", broken on two lines with the -sint below, so that there appeared to be a river flowing to the west named "Ouaricon".[5][6] This theory was endorsed in Oregon Geographic Names as "the most plausible explanation".[7]