This collection of materials consists of correspondence, flyers, petitions, and ephemera about the Western Federation of Miners and affiliated local unions. Included is correspondence from WFM Secretary-Treasurer William D. Haywood, detailed letters concerning the Northern Michigan copper miners strike of 1913-1914, pamphlets requesting financial assistance to aid strikers around the country, leaflets listing delinquent and unfair workers, and flyers promoting the eight-hour work day.