Creator
- Lohman, Charles R.1
- Long, Howard1
- Longmans, Green, and Co.1
- Los Alamos Scientific Laboratory1
- Lothrop Publishing Company1
- Lovibond, Joseph W. (Joseph Williams), 1835-19181
- Luckiesh, Matthew, 1883-19671
- Lyell, Charles, Sir, 1797-18751
- Lyman, Henry M. (Henry Munson), 1835-19041
- Macalister, Alexander1
- Macilwain, George, 1797-18821
- Mackellar, Smiths & Jordan Co.1
- Macmillan Company1
- Macmillan Company of Canada1
- Maire, F. (Frederick)1
- Mallis, Arnold1
- Manufacturing Chemists' Association (U.S.)1
- Marpmann, Georg Friedrich Adolf, 1849-19111
- Martin, L. C. (Louis Claude)1
- Martyn, Lily1