Map of the final U.S. Highway system as approved November 11, 1926
<ul><li>Published by: United States Geological Survey</li>
<li>Authored by: Bureau of Public Roads, <a href="https://en.wikipedia.org/wiki/United_States_Department_of_Agriculture" class="extiw" title="w:United States Department of Agriculture">United States Department of Agriculture</a></li>
<li>Highway numbering assignments by the American Association of State Highway Officials</li></ul>
1926-11-11
<a href="https://en.wikipedia.org/wiki/Bureau_of_Public_Roads" class="extiw" title="w:Bureau of Public Roads">Bureau of Public Roads</a> &amp; <a href="https://en.wikipedia.org/wiki/American_Association_of_State_Highway_Officials" class="extiw" title="w:American Association of State Highway Officials">American Association of State Highway Officials</a> (November 11, 1926). <i><a rel="nofollow" class="external text" href="http://texashistory.unt.edu/ark:/67531/metapth298433/m1/1/zoom/">United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials</a></i> (Map). 1:7,000,000. Washington, DC: <a href="https://en.wikipedia.org/wiki/United_States_Geological_Survey" class="extiw" title="w:United States Geological Survey">United States Geological Survey</a>. <a href="https://en.wikipedia.org/wiki/OCLC" class="extiw" title="w:OCLC">OCLC</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/32889555">32889555</a>. Retrieved November 7, 2013 – via University of North Texas Libraries.