Maddren, A.G., 1911, Gold placer mining developments in the Innoko-Iditarod region, in U.S. Geological Survey, Mineral resources of Alaska, report on progress of investigations in 1910: U.S. Geological Survey Bulletin 480, p. 236-270, scale 1:2,500,000.
This publication is part of a larger work. Please see B 480 for more information.
Metals