Dept. of the Interior. U.S. Geological Survey : G.P.O.,
The geology and mineral resources of a portion of the Copper River District, Alaska
Alaska, Copper River, Cape Nome, 1901
Copper River report
Document / House of Representatives ;
House document (United States. Congress. House) ;
Schrader, Frank C. (Frank Charles), 1860-1944.
Spencer, Arthur C. (Arthur Coe), 1871-1964.
Geological Survey (U.S.)
by Frank Charles Schrader and Arthur Coe Spencer.
The geology and mineral resources of a portion of the Copper River District, Alaska