Author
Socialist Party (U.S.)
7
Industrial Workers of the World
5
League for Industrial Democracy
3
Communist Party of the United States of America
2
Goldman, Emma, 1869-1940
2
Industrial Union Party (U.S.)
2
Industrial Workers of the World. General Executive Board
2
International Communist Opposition
2
Socialist Workers Party
2
Workers Party of the United States
2
Young Communist League of the U.S.
2
American Council against Nazi Propaganda
1
American Friends of the Chinese People
1
American Marxist Association
1
American Student Union
1
Berkman, Alexander, 1870-1936
1
Committee for Non-violent Revolution (U.S.)
1
Communist International. Executive Committee
1
Communist League of America (Opposition)
1
Communist League of America (Opposition). National Youth Committee
1
Communist League of Struggle
1
Communist Party U.S.A. (Opposition)
1
Communist Party U.S.A. (Opposition). National Committee
1
Communist Party of the U.S.A. (Majority Group). National Council
1
Communist Party of the U.S.A. (Opposition). National Council
1
Communist Party of the United States of America. National Committee
1
Corey, Lewis
1
Day, Dorothy, 1897-1980
1
Debs, Eugene V. 1855-1926
1
Fabian Educational Company
1
Feigenbaum, William M., 1886-1949
1
Fellowship (Group)
1
Friends of the Chinese People
1
Gilman, Charlotte Perkins, 1860-1935
1
Independent Communist Labor League (U.S.). National Council
1
Independent Labor League of America. National Council
1
Independent Socialist League
1
International Educational Association
1
International Group of San Francisco
1
International Labor Defense
1
Labor Research Front (New York, N.Y.)
1
League for Industrial Democracy. Intercollegiate Student Council
1
League of American Writers. Hollywood Chapter
1
Leninist League USA
1
Macdonald, Dwight
1
Marx Institute
1
Marxian Labor College
1
Marxist Workers' Party
1
National Student Forum
1
National Student League (U.S.)
1
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