| Call number | Item |
| H | Social Sciences (Go to start of category) |
| HX | Socialism, Communism, Utopias, Anarchism (Go to start of category) |
| HX86 .D25 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Capitalism Versus Socialism, by Daniel De Leon and William H. Berry (PDF at slp.org) |
| HX86 .D36 | De Leon-Carmody Debate: Individualism vs. Socialism (fourth edition; New York: New York Labor News Co., 1912), by Daniel De Leon and Thomas Carmody, contrib. by Emmet W. Connors (page images at HathiTrust) |
| HX86 .D36 | Socialism vs. "Individualism": De Leon-Carmody Debate, by Daniel De Leon and Thomas Carmody (PDF at slp.org) |
| HX86 .D37 | A Socialist in Congress: His Conduct and Responsibilities (originally published 1911; New York: New York Labor News Co., 1963), by Daniel De Leon (multiple formats at archive.org) |
| HX86 .D37 | Socialist Landmarks: Four Addresses (New York: New York Labor News Co., 1952), by Daniel De Leon (page images at HathiTrust) |
| HX86 .D383 | Reform or Revolution? (1896), by Daniel De Leon (HTML at marxists.org) |
| HX86 .D383 1934 | Reform or Revolution (New York: Industrial Union Party, 1934), by Daniel De Leon (multiple formats at archive.org) |
| HX86 .D43 | Unity (based on the second edition, 1914, with commentary), by Daniel De Leon (PDF at slp.org) |
| HX86 .D45 | What Means This Strike?, by Daniel De Leon (HTML at marxists.org) |
| HX86 .D45 1898 | What Means This Strike? Address Delivered by Daniel DeLeon in the City Hall of New Bedford, Mass., February 11th, 1898 (New York: National Executive Committeee, Socialist Labor Party, ca. 1898), by Daniel De Leon (page images at HathiTrust) |
| HX86 .D45 1899 | What Means This Strike? Address Delivered by Daniel De Leon in the City Hall of New Bedford, Massachusetts, February 11, 1898 (The People LIbrary v2 #1; New York: New York Labor News Co., 1899), by Daniel De Leon (page images at HathiTrust) |
| HX86 .D5 1936 | The Roosevelt Red Record and its Background (Kenilworth, IL and Chicago: The author, c1936), by Elizabeth Kirkpatrick Dilling |
| HX86 .D64 1993 | Does America Need a Social Democratic Movement? (Washington: Social Democrats USA, c1993), ed. by Rita Freedman (multiple formats at archive.org) |
| HX86 .D92 | The Struggle Against Opportunism in the Labor Movement: For a Socialist United States (New York: New York Communications Committee, ca. 1947), by William F. Dunne (page images at HathiTrust) |
| HX86 .E45 | A Study in Socialism (St. Louis et al.: B. Herder, 1915), by Benedict Elder |
| HX86 .F65 | Toward Soviet America (special edition printed for International Publishers by Coward-McCann, c1932), by William Z. Foster |
| HX86 .G37 | On Guard Against Browderism, Titoism, Trotskyism (New York: New Century Publishers, 1951), by John Gates (PDF at flvc.org) |
| HX86 .H14 1931 | T. N. T. (Chicago: Tower Press, 1931), by Edwin Marshall Hadley (multiple formats at archive.org) |
| HX86 .H14 1931 | T. N. T. (second edition; Chicago: Tower Press, 1932), by Edwin Marshall Hadley (page images at HathiTrust) |
| HX86 .H7 | Recent Progress of the Socialist and Labor Movements in the United States (Chicago: Charles H. Kerr Co., 1907), by Morris Hillquit |
| HX86 .H74 1909 | Socialism in Theory and Practice (New York: Macmillan, 1909), by Morris Hillquit (multiple formats at archive.org) |
| HX86 .H747 1920 | Socialism on Trial (New York: B. W. Huebsch, c1920), by Morris Hillquit (multiple formats at archive.org) |
| HX86 .H75 | Socialism: Promise or Menace? (New York: Macmillan, 1914), by Morris Hillquit and John A. Ryan (multiple formats at archive.org) |
| HX86 .H75 1920 | Socialism: Promise or Menace? (New York: Macmillan, 1920), by Morris Hillquit and John A. Ryan (page images at HathiTrust) |
| HX86 .H777 | Socialism (New York: A. D. F. Randolph and Co., 1879), by Roswell D. Hitchcock |