| 1921 | Should Communists Participate in Reactionary Trade Unions?✓Free Harvard Social History/business Preservation Microfilm Project -- 25202 | Vladimir Il’ich Lenin | English |
| 1921 | The American Foreign-Born Workers✓Free | Clarissa S. Ware | English |
| 1922 | Dictatorship vs. Democracy (Terrorism and Communism)✓Free — A Reply to Karl Kautsky | Leon Trotsky | English |
| 1922 | Dictatorship vs. Democracy (Terrorism and Communism) a Reply to Karl Kautsky, by Leon Trotsky [Pseud.] with a Preface by H. N. Brailsford, and a Foreword by Max Bedact✓Free Workers Party Library, Vol. I | Leon Trotsky | English, Russian |
| 1922 | For a Labor Party✓Free — Recent Revolutionary Changes in American Politics: A Statement by the Workers Party | Communist Party of the United States of America | English |
| 1922 | For a Labor Party: Recent Revolutionary Changes in American PoliticsFree | Pepper, John, fl | English |
| 1923 | "Underground Radicalism"✓Free — An Open Letter to Eugene v. Debs and to All Honest Workers Within the Socialist Party Harvard Social History/business Preservation Microfilm Project -- 25198 | John Pepper | English |
| 1923 | For a Labor Party✓Free — Recent Revolutionary Changes in American Politics | John Pepper | English |
| 1923 | Strategy of the Communists✓ — A Letter from the Communist International to the Mexican Communist Party | Communist International. Executive Committee & Partido Communista Mexicano | English |
| 1923 | The American Foreign-Born Workers✓Free | Clarissa S. Ware | English |
| 1923 | The Government--strikebreaker✓Free — A Study of the Role of the Government in the Recent Industrial Crisis Workers Party Library -- v. 2 | Jay Lovestone | English |
| 1923 | The Labor Lieutenants of American Imperialism✓Free | Jay Lovestone | English |
| 1923 | Why Every Worker Should Be a Communist and Join the Workers PartyFree | Charles E. Ruthenberg | English |
| 1924 | Class Struggle vs Class Collaboration✓Free The Little Red Library -- No.2 | Earl Browder | English |
| 1924 | Nikolai Lenin✓Free — His Life and Work | Grigory Yevseyevich Zinovyev | English |
| 1924 | The Daily Worker✓ | Workers (Communist) Party of America & Communist Party | English |
| 1924 | The La Follette Illusion as Revealed in an Analysis of the Political Role of Senator Robert M. La Follette✓Free | Jay Lovestone | English |
| 1924 | The State and RevolutionFree — Marxist Teaching on the State and the Task of the Proletariat in the Revolution | Vladimir Ilʹich Lenin | English |
| 1925 | American Imperialism✓Free — The Menace of the Greatest Capitalist World Power | Jay Lovestone | English |
| 1925 | Class Struggle vs. Class Collaboration✓Free The Little Red Library -- No. 2 | Earl Browder & Communist Party of the United States of America | English |
| 1925 | Fairy Tales for Workers' Children✓Free | Hermynia Zur Mühlen | English |
| 1925 | Leninism or Trotskyism✓Free | Grigory Yevseyevich Zinovyev, Joseph Stalin, Lev Borisovich Kamenev & Communist Party | English |
| 1925 | Poems for Workers✓Free — An Anthology The Little Red Library -- No. 5 | Manuel Gomez | English |
| 1925 | Principles of CommunismFree The Little Red Library, No. 3 | Friedrich Engels & Max Bedacht | English |
| 1925 | Principles of Communism: (Engels' Original Draft of the Communist Manifesto)Free | Engels, Friedrich 1820-1895. Bedacht, Max | English |
| 1925 | The Fourth National Convention of the Workers (Communist) Party of America✓Free — Report of the Central Executive Committee to the 4th National Convention...resolutions of the Parity Commission and Others | Workers (Communist) Party (United States). National Convention | English |
| 1925 | The Fourth National Convention of the Workers (Communist) Party of America: Report of the Central Executive Committee to the 4th National Convention Held in Chicago, Illinois, August 21st to 30th, 1925: Resolutions of the Parity Commission and OthersFree | Workers (Communist) Party of America | English |
| 1925 | The Theory and Practice of LeninismFree | Joseph Stalin | English |
| 1925 | Worker Correspondents✓Free — What? When? Where? Why? How? The Little Red Library -- No. 4 | William F. Dunne | English |
| 1926 | Cons Titution of the U.S.S.R.✓ — Rights of the Trade Unions in the U.S.S.R. Little Red Library -- No. 10 | Soviet Union | English |
| 1926 | Elements of Political Education✓Free | Aleksandr Ivanovich Berdnikov | English |
| 1926 | The Awakening of China, by James H. Dolsen✓Free | James H. Dolsen | English |
| 1926 | The General Strike and the General BetrayalFree | John Pepper | English |
| 1926 | The Menace of Opportunism✓ — A Contribution to the Bolshevization of the Workers (Communist) Party | Max Bedacht | English |
| 1927 | Red Cartoons of 1927 from the Daily Worker and the Workers Monthly✓ | — | English |
| 1927 | The Case of Sacco and Vanzetti in Cartoons from the Daily Worker✓Free | Fred Ellis | English |
| 1927 | Worker Correspondents: What? When? Where? Why? How?Free | William F. Dunne | English |
| 1929 | The Farmer-Labor United Front✓Free | Charles E. Ruthenberg | English |
| 1929 | The Theory and Practice of Leninism✓Free | Joseph Stalin | English |
| n.d. | How Class Collaboration WorksFree The Little Red Library -- No.9 | Bertram D. Wolfe | English |
| n.d. | Marx and Engels on Revolution in AmericaFree The Little Red Library -- No.6 | Heinz Neumann | English |
| n.d. | Questions and Notes on "the A.B.C. of Communism" for Study Class Use — Including the Purpose of Communist Education and How to Organize and Conduct a Study Class | — | English |