UPDATE: This item has been located! 5/31/2019.
Becker, George F. Atlas to Accompany the Monograph on the Geology of the Comstock Lode and the Washoe District. Washington: Government Printing Office, 1882. First edition. 21 sheets. Elephant Folio [51.5 cm] Very good. Small paper label on backstrip and front board. Contents clean and complete. This is the atlas to accompany the third monograph from the USGS. 
If offered, please contact:
Ken Sanders Rare Books, ABAA at (801) 521-3819 or www.kensandersbooks.com.