- Kingsley, Adriel S.1
- Kinloch, R. A. (Robert Alexander), 1826-1891, author1
- Klein, Carl H. von, author1
- Klotz, Hermann G. (Hermann Gustav), 1844- author1
- Knapp, Herman, 1832-19111
- Knapp, Herman, 1832-1911 author1
- Knauth Brothers, author.1
- Knight, Frederick I. (Frederick Irving), 1841-1909, author1
- Kober, George M. (George Martin), 1850-1931, author1
- Kohlstock, Paul, 1861-1901, author1
- Krug, Florian, -1924, author1
- Krug, Florian, 1858-1924 author1
- Ladd, George Trumbull, 1842-1921, author1
- Lamb, J. Melvin (John Melvin), 1862-1912 author1
- Landis, Henry G. (Henry Gardner), 1848-18861
- Landois, L. (Leonard), 1837-1902, author1
- Lane, Edward B., author1
- Langdon, Frank Warren, 1852-19331
- Langdon, Frank Warren, 1852-1933, author1
- Lanphear, Emory, author1