sentences:  Wells was Mayor of St. Louis for eight years, during which time the World's Fair and the Olympics were held there.Some of his major accomplishment included overseeing the construction of a new city hall in 1903, the paving of many city streets, and—in 1904—making the city's drinking water run clear for the first time.In 1912, Governor Woodrow Wilson, Democratic candidate for President, named Wells treasurer of the Democratic National Committee.