- Hopkins, William Barton, 1853- author5
- Horwitz, Orville, 1860-19125
- Howe, S. G. (Samuel Gridley), 1801-18765
- Hunt, Ezra Mundy, 1830-18945
- International Congress of Charities, Correction, and Philanthropy (1893 : Chicago, Ill.) author.5
- Jacoby, George W., 1856-1940 author5
- Jarvis, William Chapman, 1855-1895, author5
- Jeffries, John A., author5
- Jelks, J. T. (James Thomas), 1849-1902, author5
- Jewett, Charles, 1842-19105
- Johnson, I. D. (Isaac D.), 1827-19115
- Jordan, Henry J.5
- Kellogg, John Harvey, 1852-19435
- Kingsley, Norman W. (Norman William), 1829-19135
- Klein, Carl H. von, author5
- Knight, Charles H. (Charles Huntoon), 1849-1913 author5
- Knight, Frederick I. (Frederick Irving), 1841-1909, author5
- La Roche, R. (ReneĢ), 1795-18725
- Lambert, T. S. (Thomas Scott), 1819-18975
- Landis, Henry G. (Henry Gardner), 1848-18865