Original caption: "Figure 63.  Map showing shipping mines in central Appanoose county."  <a href="https://en.wikipedia.org/wiki/Centerville,_Iowa" class="extiw" title="en:Centerville, Iowa">en:Centerville, Iowa</a> is in the lower right quadrant.  Mines have been tinted red by the uploader.  The railroads shown on the map are:  <a href="https://en.wikipedia.org/wiki/Chicago,_Rock_Island_and_Pacific_Railroad" class="extiw" title="en:Chicago, Rock Island and Pacific Railroad">en:Chicago, Rock Island and Pacific Railroad</a>, <a href="https://en.wikipedia.org/wiki/Chicago,_Milwaukee_and_St._Paul_Railroad" class="extiw" title="en:Chicago, Milwaukee and St. Paul Railroad">en:Chicago, Milwaukee and St. Paul Railroad</a>, <a href="https://en.wikipedia.org/wiki/Keokuk_and_Western_Railroad" class="extiw" title="en:Keokuk and Western Railroad">en:Keokuk and Western Railroad</a>, <a href="https://en.wikipedia.org/wiki/Iowa_Central_Railway" class="extiw" title="en:Iowa Central Railway">en:Iowa Central Railway</a> and <a href="https://en.wikipedia.org/wiki/Iowa_and_St._Louis_Railway" class="extiw" title="en:Iowa and St. Louis Railway">en:Iowa and St. Louis Railway</a>.
Henry Hinds
The Coal Deposits of Iowa, Chapter I of <a rel="nofollow" class="external text" href="https://books.google.com/books?id=zPbUAAAAMAAJ&amp;pg=PA269">Iowa Geological Survey Annual Report, 1908</a>