Creator
- Morse, Harry W. (Harry Wheeler), 1873-1
- Morton, Henry, 1836-19021
- Munn & Co. (New York, N.Y.)1
- Musial, Joseph W., 1905-1
- N.K. Fairbank Company1
- Napier, James, 1810-18841
- National Carbon Company, Inc.1
- National Committee on Atomic Information1
- National Research Council (U.S.). Division of Engineering and Industrial Research1
- Neuburger, Albert, 1867-19431
- Neville, Roy G.1
- New England Lithographic Co.1
- Newlands, James Andrew, 1877-1
- Nonotuck Silk Company1
- Nutshell series1
- Nutter, William H.1
- O'Connell, W. J., Jr.1
- O'Connor, D.1
- O'Reilly, Declan1
- Oak Ridge National Laboratory1