243-247 Pearl Street, N.Y. Empire Lith & Engr. Co. 15 x 8 inches. Center crease, soft corner crease, small edge tear, otherwise a very clean example. Near Fine. 
"THE EUREKA MINING DISTRICT, NEVADA" by THOMAS B. NOLAN notes: "The Eureka Mining district lies south and west of the town of Eureka, county seat of Eureka County, in central Nevada. Ore was discovered in the district in 1864, and the peak production was reached in the 20 years from 1870 to 1890. Since that time production has varied considerably from year to year, reflecting periods of renewed or expanded programs of exploration and development."
While there is no specific date on this map, the paper and printing as well as many references online ot the "Golden Rule Consolidated" lead us to believe this map dates to the c1890-1910 period.