Strike in the Copper Mining District of Michigan. Letter From the Secretary of Labor, Transmitting in Response to a Senate Resolution of January 29, 1914, a Report in Regard to the Strike of Mine Workers in the Michigan Copper District Which Began on July
Strike in the Copper Mining District of Michigan. Letter From the Secretary of Labor, Transmitting in Response to a Senate Resolution of January 29, 1914, a Report in Regard to the Strike of Mine Workers in the Michigan Copper District Which Began on July