- L.L.May & Co. (1)
- Lansdale, Herbert Parker, Jr., 1898-1988 (1)
- Leake, R. A. (1)
- Lenz, Frank B. (1)
- Lerrigo, G. E. (1)
- Lippincott, Miss C.H. (1)
- Lockwood, Edward H. (1)
- Lockwood, W. W. (1)
- Louderback, Walt (7)
- Lundie, Edwin H. (4)
- Lytle Company (Photographer) (1)