Names
- Indian Independence League.2
- Indian National Congress. American Branch.2
- Ingersoll, Robert Green, 1833-1899.2
- International Congress of Women (1915 : Hague, Netherlands)2
- International Union, United Automobile, Aircraft and Agricultural Implement Workers of America.2
- Jackson, Helen Hunt, 1830-1885.2
- Japan Society (New York, N.Y.)2
- Jeffries, Edward, 1900-1950.2
- Johansen, August E. (August Edgar), 1905-1995.2
- Johnson, Elias Finley, 1861-1933.2
- Jones, Jenkin Lloyd, 1843-1918.2
- Jordan, David Starr, 1851-1931.2
- Jordan, Myra Beach, 1863-1946.2
- Kahn, Albert, 1869-1942.2
- Kellogg, John Harvey, 1852-1943.2
- Ketcham, John Clark, 1873-1941.2
- King, Judson, 1872-1958.2
- Kraus, Edward Henry, 1875-1973.2
- Krishna Menon, V. K. (Vengalil Krishnan), 1897-1974.2
- Ku Klux Klan (1915-)2