- Keithley, E. Clinton, 1880-1955 1
- Kellogg, Paul 1
- Kelly, M. F. (Michael F.), approximately 1882-1916 1
- Kendis, James, 1883-1946 (Brockman)1
- Kern, Jerome, 1885-1945 1
- Kidwell, Lloyd, 1888-1954 1
- Kiefer, Joseph 1
- Kissell, Harry F. 1
- Klay, George H. 1
- Klein, Lou, 1888-1945 1
- Klickmann, F. Henri (Frank Henri), 1885-19661
- Kness, Leo 1
- Kohn, Dave1
- Krones, Edgar 1
- Krulish, Frank 1
- Lakant, B. F. 1
- Lamar, Cyrille1
- Lampe, J. B. (Jens Bodewalt), 1869-1929 1
- Lange, Arthur, 1889-1956 1
- Laska, Edward, 1884-19591