Names
- Hubbard, Fred S.1
- Hull, William, 1753-1825.1
- Humphrey, Hubert H. (Hubert Horatio), 1911-1978.1
- Hunt, James B., 1799-1857.1
- Hutchinson, J. Edward (Jesse Edward), 1914-1985.1
- Industrial Workers of the World.1
- Ingersoll, John N., 1817-1881.1
- International Congress of Women (1915 : Hague, Netherlands)1
- International Union, United Automobile, Aircraft and Agricultural Implement Workers of America.1
- Jackson, Calvin C., 1814-1883.1
- Jerome, David Howell, 1829-1896.1
- Johansen, August E. (August Edgar), 1905-1995.2
- Johansen, August Edgar, 1905-1
- Johanson, August Edgar, 1905-1
- Johnson, Lyndon B. (Lyndon Baines), 1908-1973.2
- Johnston, Eric A. (Eric Allen), 1895-1963.1
- Joiner, Charles Wycliffe, 1916-2
- Jones, George Wallace, 1804-1896.1
- Jones, J. Weldon (James Weldon), 1896-1
- Jonkman, Bartel J. (Bartel John), 1884-1955.1