Names
- Jordan, William Ward, 1884-1975--Portraits.1
- K.C. Photo Car.1
- Keil & Matula.1
- Keystone Traveling Photo Studio.1
- Keystone View Company.1
- Kilborn Photo Paper Company.1
- Kilburn, B. W. (Benjamin West), 1827-1909.1
- King & Co.’s Traveling Gallery.1
- Knecht, George V.1
- Knecht, Josiah.1
- Knoderer, H. F. (Henry Frederick), 1840-1915.1
- Kuhler, Otto, 1894-1977.1
- Langenheim, Frederick, 1809-1879.1
- Langill, H. H. H.1
- Lawrence, Abbott, 1792-1855--Portraits.1
- Leonard, C. L.1
- Lodge, Henry Cabot, 1850-1924.1
- Loveridge, J.1
- Luccock, C. D.1
- MacDonald, Pirie, 1867-1942.1