Original caption: "Figure 11.  Map showing location of the principal mines in Webster county."  Mines have been tinted red by the uploader.  The towns shown are <a href="https://en.wikipedia.org/wiki/Coalville,_Iowa" class="extiw" title="en:Coalville, Iowa">Coalville</a>, Kalo, Border Plains and <a href="https://en.wikipedia.org/wiki/Lehigh,_Iowa" class="extiw" title="en:Lehigh, Iowa">en:Lehigh, Iowa</a>.  The railroads shown on the map are:  <a href="https://en.wikipedia.org/wiki/Minneapolis_and_St._Louis_Railway" class="extiw" title="en:Minneapolis and St. Louis Railway">en:Minneapolis and St. Louis Railway</a>, <a href="https://en.wikipedia.org/wiki/Chicago_and_Great_Western_Railroad" class="extiw" title="en:Chicago and Great Western Railroad">en:Chicago and Great Western Railroad</a>, <a href="https://en.wikipedia.org/wiki/Illinois_Central_Railroad" class="extiw" title="en:Illinois Central Railroad">en:Illinois Central Railroad</a> and the <a href="https://en.wikipedia.org/wiki/Crooked_Creek_Railroad_and_Coal_Company" class="extiw" title="en:Crooked Creek Railroad and Coal Company">en:Crooked Creek Railroad and Coal Company</a>.
Henry Hinds
The Coal Deposits of Iowa, Chapter I of <a rel="nofollow" class="external text" href="https://books.google.com/books?id=1BUMAAAAYAAJ&amp;lpg=PA484&amp;pg=PA38">Iowa Geological Survey Annual Report, 1908</a>