Radicalism in the Mountain West, 1890-1920 traces the history of radicalism in the Populist Party, Socialist Party, Western Federation of Miners, and Industrial Workers of the World in Arizona, Utah, Nevada, Idaho, Montana, Wyoming, Colorado, and New Mexico. As the frontier industrialised, self-reliant pioneers and prospectors transformed into wage-labourers for major corporations with government, military, and church ties. Economically and politically stymied, westerners rallied around home-grown radicals such as William 'Big Bill' Haywood and Vincent 'the Saint' St John and touring agitators such as Eugene Debs and Mary 'Mother' Jones. Radicalism in the Mountain West tells how volleys of strikes, property damage, executions, and deportations ensued in the absence of negotiation. Drawing on years of archival research and diverse materials such as radical newspapers, reports filed by labour spies and government agents, and records of votes, subscriptions, and memberships, Berman offers Western historians and political scientists an unprecedented view into the regions radical past.