Fil:US 431.svgDescriptionUS 431.svg English: 750 mm × 600 mm (30 in × 24 in) U.S. Highway shield, made to the specifications of the 2004 edition of Standard Highway
Fil:US 431 (1948).svgDescriptionUS 431 (1948).svg 1948 style US Route 431 highway marker Date 7 January 2011, 16:53 (UTC) Source File:US XX (1948).svg Author Fredddie, Levente
Fil:US 431 (1961).svgDescriptionUS 431 (1961).svg 1961 style US Route 431 highway marker Date 13 December 2010, 07:32 (UTC) Source File:US XX 1961.svg Author Fredddie, Scott
Fil:Elongated circle 431.svgBased partially on Elongated_circle_531.svg and Elongated_circle_429.svg English author name string: KylieTastic Wikimedia username: KylieTastic URL: http://commons