Cobb, Harrison S. <br/><br/>
Prospecting our past :  gold, silver, and Tungsten mills of Boulder County / 
by Harrison S. Cobb. 
 - Boulder, Colo. :  Book Lode,  1988. 
 - 153 p.  :  ill. 
<br/><br/><label>ISBN: </label>0961779934 
<br/><br/><label>LCCN: </label>90044172     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold mines and mining--History.--Colorado--Boulder County<br/>Silver mines and mining--History.--Colorado--Boulder County<br/>Tungsten mines and mining--History.--Colorado--Boulder County<br/>Ore-dressing plants--History.--Colorado--Boulder County