- Johnson, Julius K. 1
- Karle, E. Richard 1
- Karp, Karl 1
- Keating, Chas. T. (Charles T.) 1
- Keck, John W. 1
- Keithley, E. Clinton, 1880-1955 1
- Keithley, E. Clinton, 1880-1955 1
- Kellogg, Paul 1
- Kelly, M. F. (Michael F.), approximately 1882-1916 1
- Kernell, William, 1891-1963 1
- Kiefer, Joseph 1
- Kissell, Harry F. 1
- Klay, George H. 1
- Klickmann, F. Henri (Frank Henri), 1885-19661
- Kness, Leo 1
- Kohn, Dave1
- Krulish, Frank 1
- Lakant, B. F. 1
- Lampe, J. B. (Jens Bodewalt), 1869-1929 1
- Lange, Arthur, 1889-1956 1