Yochelson, E. L. <br/><br/>
Images of the U.S. geological survey, 1879-1979 / 
by E. L. Yochelson and C. M. Nelson 
 - Arlington :  United States Geological Survey,  1979 
 - 56 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--United States<br/>Geology--United States
<br/><br/><label>Dewey Class. No.: </label>551.70973