Dale, T. Nelson  1845-1937. <br/><br/>
Slate in the United States, 
by T. Nelson Dale and others [W. F. Hillebrand, E. C. Eckel, A. T. Coons] 
 - Washington,  Govt. print. off.,  1914. 
 - 220 p.  illus., plates, maps (part fold.) fold. tab., diagrs.  24 cm. 
 - U. S. Geological survey. Bulletin  no. 586 .
<br/><br/> Many plates printed on both sides of leaves.  "The present bulletin is not only a corrected and revised ed. of bulletin 275, but contains also the results of ... recent discoveries and studies." 
<br/><br/>"Bibliography of slate": p. 205-213. 
<br/><br/><label>LCCN: </label>gs 14000783  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slate.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 586