Flotation Tests of Idaho Ores, report, 1921; (https://digital.library.unt.edu/ark:/67531/metadc12395/m1/1/: accessed May 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Flotation Tests of Idaho Ores, report, 1921; (https://digital.library.unt.edu/ark:/67531/metadc12395/m1/1/: accessed May 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .