- Lockhart, Kathleen Bari, Lynn1
- Locomotives1
- Long, Crawford Williamson, 1815-18785
- Lowenstein, Leon--Pictorial works14
- Luncheons1
- Lundigan, William, 1914-19752
- Lyons, Anna McNeill--Pictorial works4
- Lyons, John Andrew--Pictorial works2
- Lyons, John Andrew--Portraits2
- Lyons, Joseph J, 1903-1983--Pictorial works6
- M. Lowenstein &5
- Magnolias1
- Maitland Art Center2
- Manly, Charles M. (Charles Matthews), 1876-19271
- Mann, James Lewis, 1872-19433
- Manual work1
- Maps1
- Masonry domes1
- McCulloch, Dorothy, 1938-10
- McCulloch, Kevin8