National Copper Mill in Mullan, Idaho (May 10, 1925)Image courtesy of Univ. of Idaho Library, Specia
National Copper Mill in Mullan, Idaho (May 10, 1925)Image courtesy of Univ. of Idaho Library, Special Collections & Archives Department. For more information about this image, see: https://harvester.lib.uidaho.edu/collection/items/lumber458.html -- source link