States with locations of <a href="https://en.wikipedia.org/wiki/Krystal_(restaurant)" class="extiw" title="en:Krystal (restaurant)">Krystals</a> in red and <a href="https://en.wikipedia.org/wiki/White_Castle_(restaurant)" class="extiw" title="en:White Castle (restaurant)">White Castles</a> in blue.  States with both Krystals and White Castles are colored purple.
<a href="https://en.wikipedia.org/wiki/User:Samsoncity" class="extiw" title="wikipedia:User:Samsoncity">Samsoncity</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>)
<p>Image made from <a href="//commons.wikimedia.org/w/index.php?title=File:BlankMap-USA-states.svg&amp;action=edit&amp;redlink=1" class="new" title="File:BlankMap-USA-states.svg (page does not exist)">BlankMap-USA-states.SVG</a>
</p>
<ul><li><a rel="nofollow" class="external text" href="http://www.whitecastle.com/_pages/Locate.asp">White Castle Location</a></li>
<li><a rel="nofollow" class="external text" href="http://www.krystal.com/">Krystal's Locations</a></li>
<li><a href="https://en.wikipedia.org/wiki/en:Image:Krystal-vs-whitecastle-locations-map.png" class="extiw" title="w:en:Image:Krystal-vs-whitecastle-locations-map.png">Krystal-vs-whitecastle-locations-map.png</a></li></ul>