Sign M1-H6b “Township Route Marker” from the <i><a href="https://en.wikipedia.org/wiki/Ohio_Manual_of_Uniform_Traffic_Control_Devices" class="extiw" title="w:Ohio Manual of Uniform Traffic Control Devices">Ohio Manual of Uniform Traffic Control Devices</a></i>, with text converted to paths. The SDMM actually depicts <a href="//commons.wikimedia.org/wiki/File:Harmony_Township_Route_92,_Morrow_County,_Ohio.svg" title="File:Harmony Township Route 92, Morrow County, Ohio.svg">File:Harmony Township Route 92, Morrow County, Ohio.svg</a>, but this is a blank version of the shield.
Ohio Department of Transportation
2006-01-20
<cite class="book" style="font-style:normal">"<a rel="nofollow" class="external text" href="https://www.dot.state.oh.us/Divisions/Engineering/Roadway/DesignStandards/traffic/SDMM/Documents/SDMM%20Chap04d_011521.pdf#page=31">Guide Signs, Markers</a>" in   (20 January 2006) <i> Sign Designs and Markings Manual</i> (PDF), Ohio Department of Transportation  <small></small></cite>