- Lanphear, Emory, author5
- Lovett, Robert W. (Robert Williamson), 1859-19245
- Lundy, C. J. (Charles J.), 1846-1892 author5
- Lyman, George H. (George Hinckley), 1819-1891, author5
- Mackall, Louis, 1801-18765
- Marks, A. A. (Amasa Abraham)5
- Martin, H. Newell (Henry Newell), 1848-18965
- Marvin, Joseph Benson, 1852-1913, author5
- Massachusetts Medical Society.5
- Massey, G. Betton (George Betton), 1856-1927, author5
- Mastin, Claudius H. (Claudius Henry), 1826-1898, author5
- Matthews, Washington, 1843-1905, author5
- Mays, Thomas J. (Thomas Jefferson), 1846-1918 author5
- McKee, E. S., author5
- McLean Asylum Training School for Nurses, author.5
- Medical Society of the District of Columbia, author.5
- Meigs, Arthur V. (Arthur Vincent), 1850-1912 author5
- Michel, Middleton, 1822-1894, author5
- Miller, James, 1812-18645
- Miller, John S., 1845-1922 author5