| 1898 | What Means This Strike?✓Free — Address Delivered by Daniel DeLeon in the City Hall of New Bedford, Mass., February 11th, 1898 | Daniel De Leon | New York Labor News Company | English |
| 1899 | Reform or Revolution✓Free — Address Delivered Under the Auspices of the People's Union, at Well's Memorial Hall, Boston, January 26, 1896 | Daniel De Leon | New York Labor News Company | English |
| 1899 | The Class Struggle✓ | Karl Kautsky & Bruno Schönlank | New York Labor News Company | English |
| 1899 | The Development of Socialism from Utopia to Science✓Free Labor Library -- No. 5 | Friedrich Engels | New York Labor News Company | English |
| 1899 | What Means This Strike? Address Delivered by Daniel De Leon in the City Hall of New Bedford, Massachusetts, February 11th, 1898✓Free | Daniel De Leon | New York Labor News Company | English |
| 1900 | Reform or Revolution; Address Delivered Under the Auspices of the People's Union ... Boston, Jan. 26, 1896Free | Daniel De Leon | New York Labor News Company | English |
| 1900 | Socialism vs. Anarchism✓ People's Pocket Series -- No. 5 | Daniel De Leon | Appeal to Reason | English |
| 1900 | Speeches and Editorials✓Free | Daniel De Leon | New York Labor News Company | English |
| 1900 | The Socialist Trade and Labor Alliance Versus the "Pure and Simple" Trade Union✓ — A Debate Held at the Grand Opera House, New Haven, Conn., November 25, 1900, Between Daniel De Leon Representing the Socialist Trade & Labor Alliance and the Socialist Labor Party, and Job Harriman Representing the "Pure and Simple" Trade Union and the Social Democratic Party ... The People Library | Daniel De Leon | New York Labor News Company | English |
| 1900 | The Working Class (the Proletariat)✓Free | Karl Kautsky | New York Labor News Company | English |
| 1903 | ?What Means This Strike?✓Free | Daniel De Leon | New York Labor News Company | English |
| 1903 | Two Pages from Roman History✓Free | Daniel De Leon | New York Labor News Company | English |
| 1903 | Two Pages from Roman History. I. Plebs Leaders and Labor Leaders. II. the Warning of the Gracchi✓Free | Daniel De Leon | New York Labor News Company | English |
| 1904 | Flashlights of the Amsterdam International Socialist Congress✓Free | Daniel De Leon | New York Labor News Company | English |
| 1904 | The Burning Question of Trades Unionism✓ | Daniel De Leon | New York Labor News Company | English |
| 1904 | The Gold Sickle or Hena the, Virgin of the Isle of Sen✓Free — A Tale of Druid Gaul | Eugène Sue | New York Labor News Company | English |
| 1904 | The Infant's Skull✓Free — Or, the End of the World, a Tale of the Millennium | Eugène Sue | New York Labor News Company | English, French |
| 1904 | The Pilgrim's Shell; or, Fergan the Quarryman, a Tale from the Feudal Times✓Free | Eugène Sue | New York Labor News Company | English |
| 1905 | Flashlights of the Amsterdam International Socialist Congress, 1904✓Free | Daniel De Leon | New York Labor News Company | English |
| 1905 | Principles of Industrial Unionism✓ — An Address on the Preamble of the Industrial Workers of the World | Daniel De Leon | Socialist Labour Press | English |
| 1905 | The Preamble of the Industrial Workers of the World✓Free | Daniel De Leon | New York Labor News Company | English |
| 1906 | The Iron Trevet, or, Jocelyn, the Champion✓Free — A Tale of the Jacuerie | Eugène Sue | New York Labor News Company | English |
| 1907 | The Capitalist ClassFree | Karl Johann Kautsky & Daniel De Leon | Socialist Labour Press | English |
| 1907 | The Poniard's Hilt✓Free — Or, Karadeucq and Ronan; a Tale of Bagauders and Vagres | Eugène Sue | New York Labor News Company | English |
| 1907 | What Means This Strike?✓Free — Address | Daniel De Leon | Socialist Labour Press | English |
| 1908 | Marx on Mallock, or, Facts vs. Fiction✓ Library of American Civilization -- LAC 40006 | Daniel De Leon | New York Labor News Company | English |
| 1908 | The Abbatial Crosier✓Free — Or, Bonaik and Septimine, a Tale of a Medieval Abbess | Eugène Sue | New York Labor News Company | English, French |
| 1908 | The Branding Needle✓Free — Or, the Monastery of Charolles, a Tale of the First Communal Charter | Eugène Sue | New York Labor News Company | English |
| 1908 | The Burning Question of Trades Unionism✓ | Daniel De Leon | Socialist Labour Press | English |
| 1908 | The Carlovingian Coins✓Free — Or, the Daughters of Charlemagne; a Tale of the Ninth Century | Eugène Sue & Daniel De Leon | New York Labor News Company | English, French |
| 1908 | The Mysteries of the Peoples✓ — Transl. From the Original French | Eugène Sue & Daniel De Leon | New York Labor News Company | Not recorded |
| 1908 | The Preamble of the Industrial Workers of the WorldFree — Address Delivered at Union Temple, Minneapolis, Minnesota, July Tenth, 1905 | Daniel De Leon | Socialist Labour Press | English |
| 1908 | Two Pages from Roman History✓Free | Daniel De Leon | Socialist Labour Press | English |
| 1909 | The Casque's Lark. Or, Victoria, the Mother of the Camps✓Free — A Tale of the Frankish Invasion of Gaul The Mysteries of the People: History of a Proletarian Family Across the Ages | Eugène Sue | New York Labor News Company | English |
| 1909 | The Iron Arrow Head or the Buckler Maiden✓Free — A Tale of the Northman Invasion | Eugène Sue | New York Labor News Company | English |
| 1909-01-01 | The Iron Collar or Faustina and Syomara✓Free — A Tale of Slavery Under the Romans | Eugène Sue | New York Labor News Company | English |
| 1909 | The Iron Pincers✓Free — Or, Mylio and Karvel, a Tale of the Albigensian Crusades | Eugène Sue | New York Labor News Company | English |
| 1909 | The Iron Pincers or Mylio and Karrel✓ — A Tale of the Albigensian Crusades | Eugène Sue | New York Labor News Company | English |
| 1909 | The Iron Pincers, or, Mylio and Karuel✓ — A Tale of the Albigensian Crusades | Eugène Sue | New York Labor News Company | English |
| 1909 | The Silver Cross✓Free — Or, the Carpenter of Nazareth; a Tale of Jerusalem | Eugène Sue | New York Labor News Company | English |
| 1909 | Woman's Suffrage✓Free — An Address | Daniel De Leon | New York Labor News Company | English |
| 1910 | Franz von Sickingen✓Free — A Tragedy in Five Acts | Ferdinand Lassalle | New York Labor News Company | English |
| 1910 | The Executioner's Knife✓Free — Or, Joan of Arc; a Tale of the Inquisition | Eugène Sue | New York Labor News Company | English |
| 1910 | The Galley Slave's Ring, or, the Family of Lebrenn✓Free — A Tale of the French Revolution of 1848 | Eugène Sue | New York Labor News Company | English |
| 1911 | Abolition of Poverty✓ — Socialist Versus Ultramontane Economics and Politics Library of American Civilization -- LAC 40006 | Daniel De Leon | New York Labor News Company | English |
| 1911 | Abolition of Poverty Socialist Versus Ultramontane Economics and Polit✓ | Daniel De Leon | New York Labor News Company | English |
| 1911 | Berger's Hit and Misses at the Called Session of the Sixty-Second CongressFree | Daniel De Leon | New York Labor News Company | English |
| 1911 | Berger's Hit and Misses at the Called Session of the Sixty-Second Congress, April-October 1911✓ — A Symposium of Economic, Political, Sociological, Tactical and Historic Live Topics | Daniel De Leon | New York Labor News Company | English |
| 1911 | Berger's Hits and Misses at the Called Session of the Sixty-Second Congress, April-October✓Free — A Symposium of Economic, Political, Sociological, Tactical and Historic Live Topics [With His De Leon-Berry Debate. New York, 1915] | Daniel De Leon & Socialist Labor Party | New York Labor News Company | English |
| 1911 | The Socialist Republic✓Free | Karl Kautsky | New York Labor News Company | English |
| 1911 | The Working Class (the Proletariat)✓Free | Karl Kautsky | New York Labor News Company | English |
| 1911 | Watson on the Gridiron or Bourgeois Theories Disected and Hang-up to Dry✓ — A Political-Economic Discussion Between Thomas E. Watson and Daniel De Leon | Daniel De Leon & Thomas Edwards Watson | New York Labor News Company | English |
| 1911 | Watson on the Gridiron, or, Bourgeois Theories Dissected and Hung up to Dry✓Free — A Political-Economic Discussion Between Thomas E. Watson and Daniel De Leon | Daniel De Leon | New York Labor News Company | English |
| 1911 | Woman's Suffrage✓ — An Address Nineteenth Century Collections Online: Women and Transnational Networks | Daniel De Leon | New York Labor News Company | English |
| 1912 | De Leon-Carmody Debate✓Free — Individualism vs. Socialism | Daniel De Leon | New York Labor News Company | English |
| 1913 | The Eighteenth Brumaire of Louis Bonaparte✓Free | Karl Marx | Charles H. Kerr & Company | English |
| 1913 | What Means This Strike?✓Free | Daniel De Leon | New York Labor News Company | English |
| 1914 | Father Gassoniana✓ | Daniel de León | New York Labor News Company | English |
| 1914 | Father Gassoniana, or, Jesuit "Sociology" and "Economics" at the Bar of Science and History✓Free — The Effort of Religio-Politics and Economics to Shield Terrestrial Capitalism Shivered | Daniel De Leon | New York Labor News Company | English |
| 1914 | Unity✓ — An Address Delivered by Daniel De Leon at New Pythagoras Hall New York, February 21, 1908 | Daniel De Leon | New York Labor News Company | English |
| 1914 | Woman's Suffrage✓ — An Address Delivered | Daniel De Leon | New York Labor News Company | English |
| 1917 | Berger's Hit and Misses at the Called Session of the Sixty-Second Congress, April-October✓ — A Symposium of Economic, Political, Sociological, Tactical, and Historic Live Topics | Daniel De Leon | New York Labor News Company | English |
| 1918 | Industrial Unionism✓Free | Daniel De Leon | New York Labor News Company | English |
| 1918 | Industrial Unionism by Daniel De Leon✓Free — Also, an Address on the Same Subject Delivered at Grand Central Palace, New York, Sunday, Dec. 10, 1905, by Eugene v. Debs | Daniel De Leon | New York Labor News Company | English |
| 1919 | Flashlights of the Amsterdam International Socialist Congress, 1904✓Free | Daniel De Leon | New York Labor News Company | English |
| 1919 | Industrial Unionism✓Free | Daniel De Leon | New York Labor News Company | English |
| 1922 | The Revolutionary Act; Military Insurrection or Political and Economic Action?✓Free | Friedrich Engels, Henry Kuhn & Daniel De Leon | New York Labor News Company | English |
| 1923 | Ten Cannons of the Proletarian Revolution✓ — A Revolutionary Decalogue | Daniel De Leon | New York Labor News Company | Not recorded |
| 1923 | Ten Canons of the Proletarian Revolution. A Revolutionary Decalogue✓ | Daniel De León | New York Labor News Company | English |
| 1923 | Woman under socialism✓Free | August Bebel & Daniel de Leon | New York Labor News Company | German |
| 1925 | Marx on Mallock or facts vs. Fiction✓ — An Address delivered in Maennerchor Hall, New York, Jan. 21. 1908 | Daniel de Leon | New York Labor News Company | German |
| 1928 | Ultramontanism✓Free — Roman Catholic Political Machine in Action | Daniel De Leon | New York Labor News Company | English |
| 1929 | Flashlights of the Amsterdam Congress✓Free | Daniel De Leon | New York Labor News Company | English |
| 1929-01-01 | Flashlights of Them Amsterdam Congress | Daniel De Leon | New York Labor News Company | English |
| 1930 | Fifteen Questions Asked by the Providence, R. I., "Visitor"✓ — Representing the Roman Catholic Political Machine | Daniel De Leon | New York Labor News Company | English |
| 1930 | Russia in Revolution✓ — Selected Editorials | Daniel De Leon | New York Labor News Company | English |
| 1930 | Socialist Reconstruction of Society (the Preamble of the I[ndustrial] W[orkers] W[orld])✓ — The Industrial Vote | Daniel de Leon | New York Labor News Company | Not recorded |
| 1931 | Industrial Unionism✓Free — Selected Editorials | Daniel De Leon | New York Labor News Company | English |
| 1931 | Party Ownership of the Press✓ — Historic Documents Relating to the Establishing of the Principles Involved | Daniel De Leon | New York Labor News Company | English |
| 1931 | Revolutionary Socialism in U. S. Congress✓ — "Parliamentary Idiocy" vs. Marxian Socialism | Daniel De Leon | New York Labor News Company | English |
| 1932 | Marxian Science and the Colleges✓ | Daniel De Leon | New York Labor News Company | English |
| 1932 | The Burning Question of Trades Unionism✓ — A Lecture Delivered at Newark, N.J., April 21, 1904 | Daniel De Leon | New York Labor News Company | English |
| 1933 | De Leon-Berry Debate on Solution for the Trust Problem✓ — Between Daniel De Leon and Wm. H. Berry, Held Before the University Extension Society, Philadelphia, January 27, 1913 | Daniel De Leon | New York Labor News Company | English |
| 1933 | Reform or Revolution✓Free | Daniel De Leon | New York Labor News Company | English |
| 1934 | Fifteen Questions Asked by the Providence, R. I., "Visitor"✓ — Representing the Roman Catholic Political Machine | Daniel De Leon | New York Labor News Company | English |
| 1934 | Reform or Revolution✓Free Library of American Civilization -- LAC 40073 | Daniel De Leon | New York Labor News Company | English |
| 1935 | A Decadent Jeffersonian on the Socialist Gridiron✓ | Daniel De Leon | New York Labor News Company | English |
| 1935 | As to Politics, and a Discussion upon the Relative Importance of Political Action and of Classconscious Economic Action, and the Urgent Necessity of Both✓Free | Daniel DeLeon | New York Labor News Company | English |
| 1935-01-01 | Socialist Economics in Dialogue✓ | Daniel De Leon | New York Labor News Company | English |
| 1935 | Two Pages from Roman History✓Free — Plebs Leaders and Labor Leaders and the Warning of the Gracchi | Daniel De Leon | New York Labor News Company | English |
| 1936 | Ten Canons of the Proletarian Revolution✓Free — A Revolutionary Decalogue | Daniel De Leon | New York Labor News Company | English |
| 1938 | Capitalism vs. Socialism✓ | Daniel De Leon | New York Labor News Company | English |
| 1938 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon | New York Labor News Company | English |
| 1941 | Capitalism Means War✓ | Daniel De Leon & Socialist Labor Party | New York Labor News Company | English |
| 1942 | Socialism vs. 'individualism'✓ — Debate, Daniel De Leon vs. Thomas F. Carmody, Troy, N. Y., April l4, l912 | Daniel De Leon, Thomas Carmody & Socialist Labor Party | New York Labor News Company | French |
| 1944 | Constitution of the United States✓Free — Founding of the Bourgeois Republic | Arnold Petersen & Daniel De Leon | New York Labor News Company | English |
| 1944 | Industrial Unionism✓Free — Selected Editorials | Daniel De Leon | New York Labor News Company | English |
| 1944 | Marxian Science and the Colleges✓ | Daniel De Leon | New York Labor News Company | English |
| 1944 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon & Arnold Petersen | New York Labor News Company | English |
| 1945 | Abolition of Poverty✓ — Socialist Versus Ultramontane Economics and Politics, by Daniel De Leon | Daniel De Leon | New York Labor News Company | English |
| 1946 | Fifteen Questions✓ | Daniel De Leon | New York Labor News Company | English |
| 1946 | Two Pages from Roman History✓Free | Daniel De Leon | New York Labor News Company | English |
| 1946 | What Means This Strike?✓Free | Daniel De Leon & Socialist Labor Party | New York Labor News Company | English |
| 1947 | Capitalism Means War✓ | Daniel De Leon & John Timm | New York Labor News Company | English |
| 1947 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon & Socialist Labor Party | New York Labor News Company | English |
| 1947 | The Ballot and the Class Struggle✓ Harvard College Library Pamphlet Digitization Program | Daniel De Leon | New York Labor News Company | English |
| 1948 | The Vatican in Politics✓Free — Ultramontanism. [Editorials] | Daniel De Leon | New York Labor News Company | English |
| 1951 | The eighteenth Brumaire of Louis Bonaparte✓Free — With glossary and index | Karl Marx & Daniel de Leon | New York Labor News Company | German |
| 1952 | Socialist Landmarks✓ — Four Addresses | Daniel De Leon | New York Labor News Company | English |
| 1955 | Socialism vs. 'Individualism.'✓ | Daniel De Leon | New York Labor News Company | English |
| 1955 | Socialism vs. 'Individualism'. Debate — Daniel De Leon vs. Thomas F. Carmody, Troy, N.Y., April 14, 1912 | Daniel De Leon | New York Labor News Company | English |
| 1955 | Ten Canons of the Proletarian Revolution — A Revolutionary Decalogue | Daniel De Leon | New York Labor News Company | English |
| 1957 | Zwei Schriften aus der römischen Geschichte✓ — 1. Plebejerführer und Arbeiterführer. 2. Die Warnung der Graschen. Deutsche Übers. von Rogo | Daniel De Leon & Rogo | New York Labor News Company | German |
| 1959 | Constitution of the United States; Founding of the Bourgeois Republic✓Free | Arnold Petersen & Daniel DeLeon | New York Labor News Company | English |
| 1959 | Reform or Revolution✓Free — [The Historic Address Delivered ... January 26, 1896, at Well's Memorial Hall, Boston, Mass,"]" | Daniel De Leon | New York Labor News Company | English |
| 1959 | Two Pages from Roman History✓Free — Plebs, Leaders and Labor Leaders, and the Warning of the Gracchi | Daniel De Leon | New York Labor News Company | English |
| 1960 | The Burning Question of Trades Unionism✓Free | Daniel De Leon | New York Labor News Company | English |
| 1960 | The Burning Question of Trades Unionism. A Lecture Delivered at Newark, N.J., April 21, 1904Free | Daniel De Leon | New York Labor News Company | English |
| 1960 | What Means This Strike?✓Free | Daniel De Leon | New York Labor News Company | English |
| 1961 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon | New York Labor News Company | English |
| 1962 | A Socialist in Congress; His Conduct and ResponsibilitiesFree | Daniel De Leon | New York Labor News Company | English |
| 1962 | Socialism Versus Anarchism✓Free — An Address | Daniel De Leon | New York Labor News Company | English |
| 1962 | Sozialistische Marksteine✓ — 4 Ansprachen. Ein Programm z. Emanzipation d. Arbeiterklasse | Daniel De Leon | New York Labor News Company | German |
| 1962 | The Vatican in Politics✓Free — Ultramontanism: [The Roman Catholic Political Machine in Action] | Daniel De Leon | New York Labor News Company | English |
| 1962 | Two Pages from Roman History✓Free — Plebs Leaders and Labor Leaders and the Warning of the Gracchi | Daniel De Leon | New York Labor News Company | English |
| 1963 | A Socialist in Congress✓ — Its Conduct and Responsibilities | Daniel Deleon | New York Labor News Company | English |
| 1963 | A Socialist in Congress; His Conduct and ResponsibilitiesFree | Daniel De Leon | New York Labor News Company | English |
| 1963 | Constitution of the United States✓ — Founding of the Bourgeois Republic | Arnold Petersen & Daniel De Leon | New York Labor News Company | English |
| 1963 | Industrial Unionism✓Free — Selected Editorials | Daniel De Leon | New York Labor News Company | English |
| 1963 | Socialist vs. Capitalist Economics✓ — (Marx on Mallock) | Daniel De Leon | New York Labor News Company | English |
| 1963 | What Means This Strike?✓Free | Daniel De Leon | New York Labor News Company | English |
| 1964 | The Burning Question of Trades Unionism✓ — A Lecture Delivered at Newark, N.J., April 21, 1904 | Daniel De Leon | New York Labor News Company | English |
| 1965 | Evolution of a Liberal✓ — From Reform to Reaction | Daniel De Leon | New York Labor News Company | English |
| 1966 | As to Politics✓Free New York Labor News; 17 | Daniel De Leon | New York Labor News Company | English |
| 1966 | Marxian Science and the Colleges✓ | Daniel De Leon | New York Labor News Company | English |
| 1966 | Socialism vs. "Individualism"✓ — Debate [Held at Proctors's Theatre, Troy, N.Y., Sunday, April 14, 1912]; Daniel De Leon vs. Thomas F. Carmody | Daniel De Leon & Thomas Carmody | New York Labor News Company | English |
| 1967 | Fifteen Questions✓ | Daniel De Leon & Socialist Labor Party | New York Labor News Company | English |
| 1968 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon & Arnold Petersen | New York Labor News Company | English |
| 1968 | The High Cost of Living✓ — Real Causes Underlying Increased Cost of Commodities Explained | Arnold Petersen & Daniel De Leon | New York Labor News Company | English |
| 1969 | Abolition of Poverty✓ — Socialist Versus Ultramontane Economics and Politics New York Labor News; 22 | Daniel De Leon | New York Labor News Company | English |
| 1970 | Abolition of Poverty✓ — Socialist Versus Ultramontane Economics and Politics Library of American Civilization -- LAC 40006 | Daniel De Leon | New York Labor News Company | English |
| 1970 | Capitalism Means War!✓ New York Labor News; 19 | Daniel De Leon | New York Labor News Company | English |
| 1970 | Marx on Mallock✓ — Or, Facts vs. Fiction Library of American Civilization -- LAC 40006 | Daniel De Leon | New York Labor News Company | English |
| 1970 | Reform or Revolution✓Free Library of American Civilization -- LAC 40073 | Daniel De Leon | New York Labor News Company | English |
| December 1970 | Socialism Versus Anarchism (Pamphlet) | Daniel De Leon | New York Labor News Company | Not recorded |
| 1971 | The Ballot and the Class Struggle✓ New York Labor News; 18 | Daniel De Leon | New York Labor News Company | English |
| 1972 | What Means This Strike?✓Free | Daniel De Leon | New York Labor News Company | English |
| 1977-01-01 | Socialist Landmarks✓ — Four Addresses | Daniel De Leon | New York Labor News Company | English |
| 1977 | Socialist Reconstruction of Society✓Free — The Industrial Vote | Daniel De Leon | New York Labor News Company | English |
| 1977 | The Burning Question of Trades Unionism✓ — A Lecture Delivered at Newark, N.J., April 21, 1904 | Daniel De Leon | New York Labor News Company | English |
| 1980 | A Decadent Jeffersonian on the Socialist Gridiron✓ Pamphlets in American History -- S 636 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Abolition of Poverty✓ — Socialist Versus Ultramontane Economics and Politics Pamphlets in American History -- S 632 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Capitalism Means War✓ Pamphlets in American History -- S 633 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Capitalism vs. Socialism✓ Pamphlets in American History -- S 635 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Fifteen Questions✓ — Socialist Answers to Fifteen Questions Asked by Providence, R.I., "Visitor," Representing Roman Catholic Political Machine Pamphlets in American History -- S 680 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Marx on Mallock, or, Facts vs. Fiction✓Free — An Address Delivered in Maennerchor Hall, New York, Tuesday, January 21, 1908, Under the Auspices of Section New York, Socialist Labor Party Pamphlets in American History -- S 638 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Reform or Revolution✓Free — Address Delivered Under the Auspices of the People's Union, at Well's Memorial Hall, Boston, January 26, 1896 Pamphlets in American History -- S 639 | Daniel De Leon | New York Labor News Company | English |
| 1980 | Socialism vs. "Individualism," Debate✓ — Daniel De Leon vs. Thomas F. Carmody, Troy, N.Y., April 14, 1912 Pamphlets in American History -- S 642 | Daniel De Leon | New York Labor News Company | English |
| 1988 | Two Pages from Roman History✓Free — Plebs Leaders and Labor Leaders; and, the Warning of the Gracchi | Daniel De Leon | New York Labor News Company | English |
| n.d. | Money (Arte Publico Historical Collection) | Daniel De León | New York Labor News Company | English |
| n.d. | Reform or RevolutionFree | Daniel De Leon | Socialist Labour Press | English |
| n.d. | Reform or Revolution; Address Delivered Under the Auspices of the People's Union ...Free — Boston, Jan. 26, 1896 | Daniel De Leon | New York Labor News Company | English |
| n.d. | Socialism vs. Catholicism | Daniel De León | Appeal to Reason | English |
| n.d. | The Socialist Reconstruction of SocietyFree | Daniel De Leon | Socialist Labour Press | English |