Creator
- Juhl, Isabel Myers Brinckerhoff, 1897-18951
- Kalichevsky, Anatole, 1870-19371
- Kalichevsky, Vladimir, 1895-19581
- Keister, Elmer Lawrence, 1883-19461
- Keister, Martha, 1908-19901
- Kimbrough, Janet C. (Janet Coleman)1
- Koontz, Amos Ralph, 1890-19651
- Kurz, Rudolph Friedrich, 1818-18711
- Lapham, J. A.1
- Laughlin Auctions, Inc.1
- Lawrence, Clara L.1
- Lee, Fitzhugh, 1835-19051
- Lewis, Henry Turner, 1888-19431
- Logan family1
- Long, Samuel William, 1869-19611