McCormick is the oldest distillery in the United States operating at it original site. In 1976, it was listed on the National Register of Historic Sites. Lewis and Clark discovered natural limestone springs in the rolling hills of Missouri. By 1830 these pure springs were supplying water to wagon trains heading west. Years later Ben Holladay saw these limestone springs as the ingredient for great whiskey needed to supply the vast number of wagon trains passing through Weston desiring good whiskey. In 1856 he started his distillery. The tours at the distillery were discontinued in 1995. The McCormick Country Store was relocated to Main Street and sells all McCormick products and gift items; a .25 cent sample bar for customers over 21 years of age.