Map of Indiana and Ohio showing location of Black Swamp
<div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background:#3c7110;color:#202122;text-align:center;"> </div> Historic boundries of the Black swamp</div>
<a href="//commons.wikimedia.org/wiki/User_talk:Derfel73" title="User talk:Derfel73">Derfel73</a>; <a href="//commons.wikimedia.org/wiki/User:Mr._Matt%C3%A9" title="User:Mr. Matté">Mr. Matté</a>
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:USA_Counties_with_FIPS_and_names.svg" title="File:USA Counties with FIPS and names.svg">USA Counties with FIPS and names.svg</a><br>