Names
- Lane, Robert Porter, 1891-1953.1
- Langer, William L. (William Leonard), 1896-1977.1
- Larson, Laurence Marcellus, 1868-1938.1
- Latane, John Holladay, 1869-1932.1
- LeRoy, James A. (James Alfred), 1875-1909.1
- Leland, Frank Bruce.1
- Little, Clarence C. (Clarence Cook), 1888-1
- Little, Clarence C. (Clarence Cook), b. 1888.1
- Lloyd, Alfred H. (Alfred Henry), 1864-1927.1
- Lodge, Henry Cabot, 1850-1924.1
- Longman (Firm)1
- Lorch, Emil, 1870-1963.1
- Loud, Edward F.1
- Loud, George Alvin, 1852-1925.1
- Lovejoy, P. S., 1884-1942.1
- Lucas, Henry Stephen, 1889-1961.1
- MacChesney, Nathan William 1878-1954.1
- MacChesney, Nathan William, 1878-1954.1
- Mackenzie, William Dexter, 1873-1960.1
- Mackinac Bridge Authority (Mich.)1