Panfletos do United Workers Party of America (1934-1937)

Bolshevism or Communism: On the Question of a New Communist Party and the “Fourth” International. – Chicago: United Workers Party of America, 1934.

• Bolshevismo ou Comunismo – Paul Mattick
  [Bolshevism or Communism]

World-Wide Fascism or World Revolution, Chicago, March 1934, 26 p.

• Fascismo Mundial ou Revolução Mundial – Paul Mattick
  [World-Wide Fascism or World Revolution]

What next for the American Workers?. – Chicago: United Workers Party, 1934. – 29 p.

• O que se segue para os trabalhadores americanos? (Em Breve)
  [What next for the American Workers?]

The Inevitability of Communism, 1935.

• A Inevitabilidade do Comunismo – Paul Mattick (Em Breve)
  [The Inevitability of Communism]