Datei:US 501.svgDescriptionUS 501.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
Datei:USBR 501 (2009).svgEnglish route shield for U.S. Bicycle Route 501 applies to jurisdiction: United States of America determination method: work of the federal government
Datei:US 501 (1948).svgDescriptionUS 501 (1948).svg 1948 style US Route 501 highway marker Date 7 January 2011, 17:04 (UTC) Source File:US XX (1948).svg Author Fredddie, Levente
Datei:US 501 (1961).svgDescriptionUS 501 (1961).svg 1961 style US Route 501 highway marker Date 13 December 2010, 07:44 (UTC) Source File:US XX 1961.svg Author Fredddie, Scott
Datei:US 501 (1926).svgDescriptionUS 501 (1926).svg Generic U.S. Highway marker, labeled for city use, from the First Edition of the Manual and Specifications for the Manufacture