Correspondence, memoranda, notes, reports, minutes of proceedings, bulletins, pamphlets, newspapers, clippings, and other material pertaining to the history of the radical labor school at Mena, Arkansas.

Correspondents include Cedric Belfrage, Wilbur Clarke Benton, Douglass Carr, Winifred L. Chappell, J. Vance Clayton, Kenneth C. Coffelt, William Fadjo Cravens, Samuel W. Eiges, Henry Pratt Fairchild, Mabel Fulks, Nathan Green Gordon, Laura Ley Gray, Claris G. "Crip" Hall, Arthur Garfield Hays, Melville Jean Herskovits, Lucien Koch, Raymond Koch, Robert Allen Leflar, Edward Fitzgerald McFaddin, Martha Hillard Mac-Leish, Minor Wallace Millwee, Robert Lee Morris, Charlotte Moskowitz, Hal Lee Norwood, Jessie Lloyd O’Connor, Nathan Oser, Cornelia Elizabeth Pinchot, David Wight Prall, Griffin Smith, Boyd Alexander Tackett, Tille E. Thorkelson, Claude Williams, Guy Ellsworth Williams.