The Communist Labor Party of America was one of the organizational predecessors of the Communist Party USA.
Former United Mine Workers functionary Adolph Germer, Executive Secretary of the Socialist Party of America, was one of the leaders of the Regular faction that forced the Communist Labor Party of America to split
Executive Secretary Alfred Wagenknecht in 1918
The Left Wing Section of the Socialist Party was an organized faction within the Socialist Party of America in 1919 which served as the core of the dual communist parties which emerged in the fall of
Communist Labor Party of America
…roots in the Boston-based Socialist Propaganda League of America and the Boston newspaper The Revolutionary Age, an organized faction calling itself the Left Wing Section of the Socialist Party emerged at the end of 1918. Radical editor Louis C. Fraina composed a Left Wing Manifesto, around which the Left Wing Section organized itself, holding…
Ludwig Lore's magazine The Class Struggle, established in 1917, was an early theoretical journal of the organized Left Wing in the Socialist Party.
John Reed and Ben Gitlow's Left Wing magazine Voice of Labor was later made the labor paper of the Communist Labor Party.