Mo. Rev. Stat. § 227.313: Dr. Martin Luther King Jr. Memorial Mile designated for portion of Highway 266 in Greene County.

The portion of Missouri Highway 266 located in Greene County from Airport Boulevard to one mile east shall be designated as the "Dr. Martin Luther King Jr. Memorial Mile". The department of transportation shall erect and maintain appropriate signs designating such highway, with the costs for such designation to be paid for by private donations.