Mo. Rev. Stat. § 227.388: DeSoto Railroad Employees Memorial Highway designated for a portion of Highway 110 in Jefferson County.

The portion of Highway 110 from U.S. Highway 67 to Highway 21 within the county of the first classification with more than one hundred ninety-eight thousand but fewer than one hundred ninety-nine thousand two hundred inhabitants shall be designated the "DeSoto Railroad Employees Memorial Highway". Costs for such designation shall be paid by private donations.