Henderson, Charles W. <br/><br/>
Gold, silver, copper, lead and zinc in Colorado in 1913 :   Mines report. 

 - Washington, D.C.  Government Printing Office  1914 
 - pp. 227-278 
 - Mineral Resources of the United States, calendar year 1913-Part I. .
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA
<br/><br/><label>Dewey Class. No.: </label>