Eckel, Edwin Butt,  1906- <br/><br/>
Minerals of Colorado :  a 100-year record / 
by Edwin B. Eckel. 
 - Washington, [D.C.] :  U.S. G.P.O.,  1961. 
 - iii, 399 p. :  map ;  24 cm. 
 - Geological Survey bulletin ;  1114 .
<br/><br/> "A summary of the first 100 years of published knowledge, including the chief occurrences of 445 mineral species."  One folded col. map in pocket. 
<br/><br/>Bibliography: p. 364-399. 
<br/><br/><label>LCCN: </label>gs 61000286  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minerals--Colorado.<br/>Minerals--Colorado--Bibliography.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 1114