Mertie, J.B., Jr., and Harrington, G.L., 1916, Mineral resources of the Ruby-Kuskokwim region, in U.S. Geological Survey, Mineral resources of Alaska, report on progress of investigations in 1915: U.S. Geological Survey Bulletin 642, p. 223-266, 1 sheet, scale 1:750,000.
This publication is part of a larger work. Please see B 642 for more information.
Bedrock; Bedrock Geology; Coal; Generalized; Geology; Metals