Names
- Lederle, Arthur F., 1887-1
- Lehr, John Camillus, 1878-1958.1
- Long, Edward V. (Edward Vaughn), 1908-1972.1
- Luecke, John, 1889-19521
- Luecke, John, 1889-1952.1
- MacArthur, Douglas, 1880-1964.1
- Mackinac Bridge Authority (Mich.)1
- Mann, Thomas, 1875-1955.1
- Mansfield, Mike, 1903-2001.1
- Marshall, S. L. A. (Samuel Lyman Atwood), 1900-1977.1
- McAllister, Thomas Francis, 1896-1
- McCarthy, Joseph, 1908-1957.1
- McKay, Frank Donald, 1883-1965.1
- McKay, Frank, 1883-1965.1
- McNamara, Patrick Vincent, 1894-1966.1
- Mellon, Andrew W. (Andrew William), 1855-1939.1
- Meredith, James, 1933-1
- Mershon, William Butts, 1856-1943.1
- Mershon, Wm. B. (William Butts), 1856-1943.1
- Michigan. Mackinac Straits Bridge Authority.1