U. S. G. S., 1973. Map. Map MF-501; 1: 250,000. Sheet 2 Is Description of Map Units. More
U. S. G. S., 1956. Map. Map MF-522; 8vo 8" - 9" tall; Sheet 2 Generalized Description of map units in the artic and table mt. Quadrangels, alaska. Scale 1: 250,000. More
Washington: United States Government Printing Office, 1989. softcover, 11" x 8.5", 19 pages, illustrated. from the abstract, "Man most likely first obtained gold from placer deposits more than 6,000 years ago. Placers account for more than two-thirds of the total world gold supply, and roughly half of that mined in..... More