The records (1910–18) of an agrarian protest organization, including correspondence, newspaper files, speech transcripts, pamphlets, and other printed materials. The League’s records are supplemented by the personal papers (1916–23) of its secretary, Henry G. Teigan. They document the League’s roots in rural socialism and midwestern agrarian revolt; its policies, platforms, and political activities; its alliance with organized labor, out of which eventually emerged the Minnesota Democratic-Farmer-Labor Party; its subjection to anti-League activities and campaigns, especially during World War I, and its decline in the wake of the postwar “Red Scare” and agricultural depression.