<a href="https://en.wikipedia.org/wiki/Three_Sisters_(agriculture)" class="extiw" title="w:Three Sisters (agriculture)">Three Sisters</a> as featured on the reverse of the 2009 Native American U.S. dollar coin. 2009 reverse by Norman E. Nemeth.
United States Mint
<a href="https://en.wikipedia.org/wiki/United_States_Mint" class="extiw" title="w:United States Mint">United States Mint</a> <a rel="nofollow" class="external text" href="https://www.usmint.gov/about_the_mint/coinLibrary/">Historical Image Library</a>