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Undercover and underground : labor spies and mine management in the early twentieth century
Hyde, Charles K., (1986)
Ethnic discrimination in a 19th-century mining district : Michigan copper mines, 1888
Hannon, Joan Underhill, (1982)
Michigan copper and Boston dollars : an economic history of the Michigan copper mining industry
Gates, William Bryam, (1951)
Cradle to grave : life, work, and death at the Lake Superior copper mines
Lankton, Larry D., (1991)
Beyond the Boundaries : Life and Landscape at the Lake Superior Copper Mines, 1840-1875
Lankton, Larry D., (1997)
Labor Management in the Southern Textile Industry
COVERDILL, JAMES E., (1994)