'G. F. Becker, geologist-in-charge. Julius Bien & Co. lith. Mapping and geology by J. S. Curtis.' 'U.S. Geological Survey. Annual report 1883, pl. XXXIII.' Published by U.S. Geological Survey. Scale [ca. 1:2,400] 1 in.=200 feet. Library's copy has "Nev." printed in pencil in upper right corner.