File:Indiana 18.svgDescriptionIndiana 18.svg Indiana State Road marker Date 21 July 2012 Source Own work Author Fredddie, originally by Holderca1
File:Indiana 18 (1955).svgDescriptionIndiana 18 (1955).svg English: Indiana State Road marker Date 2 July 2016, 00:18 (UTC) Source Own work Author Fredddie
File:Indiana regions map.svg2009|location=Indiana|source=[[:wmc:File:Map of Indiana highlighting Adams County.s (Import from wikitravel.org/shared) 2009-05-14 18:01 (WT-shared)
File:Indiana regions map.png2009|location=Indiana|source=[[:wmc:File:Map of Indiana highlighting Adams County.s (Import from wikitravel.org/shared) 2009-05-14 18:01 (WT-shared)