Butler, B. S.  1877-1960. <br/><br/>
Geology and ore deposits of the Tombstone district, Arizona, 
by B. S. Butler, E. D. Wilson and C. A. Rasor. Prepared under a co-operative agreement between the Arizona Bureau of Mines and the United States Geological survey. 
 - Tucson, Ariz.,  University of Arizona  [1938] 
 - 114 p  illus., portfolio of maps, plates  23 cm. 
 - Geological series,  no. 10 .
 - University of Arizona.  State Bureau of Mines.  Geological series ;  no. 10. .
 - Bulletin (University of Arizona) ;  v. 9, no. 1. .
<br/><br/> University of Arizona bulletin, v. 9, no. 1, January, l938. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 38000114  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Arizona--Tombstone district.<br/>Ore deposits--Arizona--Tombstone district.
<br/><br/><label>LC Class. No.: </label>QE86.T6  / B8 
<br/><br/><label>Gov. Doc. Class. No.: </label>MN 1.3:B 85/143