Introduction: The peculiar case of Sheridan County communism -- Plentywood, Montana : "A new metropolis in the Northwest" -- "No place for the feeble" : homesteading on the northeastern Montana prairie -- The agrarian myth and prairie politics : precursors to radicalism -- Mountain politics : socialism and syndicalism -- The Nonpartisan League and the "old time socialists" -- Marketing the farmers' movement : the Nonpartisan League and the Producers news -- Bait and switch : communism creeps into Sheridan County -- Bootleggers and boycotts : liquor, the law, and radical politics -- No longer under cover : unconcealed communism in Sheridan County -- Big trouble in "Little Moscow" : a newspaper war erupts -- In and out of the fold : Sheridan County radicals and the Communist Party-USA -- "Seeing red" : radicalism and opposition escalate -- Personnel problems take a toll at the polls -- Death throes of a movement -- The demise of communism in Sheridan County