The American Radicalism Collection holds over 17,000 items. It includes books, pamphlets, periodicals, posters, and ephemeral material covering a wide range of viewpoints on political, social, and economic issues in America. The emphasis in the collection is on materials produced by radical groups - both left and right. While the American Radicalism Collection is strongest in publications from the American Left in the twentieth century, as well as in resources for the study of American Labor History, there is considerable material from the right, most notably the Ku Klux Klan of the 1920's and 1930's. The collection is organized under these headings: American Indian Movement, Asian America, Birth Control, Black Panthers, Hollywood Ten, I.W.W., Ku Klux Klan, Rosenberg Case, Sacco - Vanzetti. Scottsboro Boys. Students For a Democratic Society, The Masses, and Wounded Knee.