K.S.A. 68-1020: Designation and marking of the Lewis and Clark expedition route.

It shall be the duty of the secretary of transportation to designate and mark by suitable signs, following as nearly as possible the route of the historic Lewis and Clark expedition in Kansas, on the following described highways: From the Kansas-Missouri state line west on highway U.S. 24 and highway U.S. 40 through Kansas City, Kansas, to the intersection of highway U.S. 73; and from highway K-7 at the junction with U.S. highway 59 in the city of Atchison; highway K-7 north through Troy to the Kansas-Nebraska state line.