- Mitchell, Clifford, 1854-19391
- Mitchell, Giles S. (Giles Sandy), 1852-1904 author1
- Mitchell, S. Weir (Silas Weir), 1829-1914, author1
- Mix, Charles L. (Charles Louis), 1869-1935, author1
- Moffet, S. H., author1
- Montaño, Ignacio Maria, author1
- Morgan, Edwin Lee, 1855-1920 author1
- Morton, Douglas, author1
- Morton, Thomas S. K., author1
- Moscoso, Victor, active 19th century, author1
- Musick & Spencer (Firm), author.1
- Musser, John Herr, 1856-1912 author1
- Musser, John Herr, 1856-1912, author1
- Muter, John, author1
- Mülhens & Kropff, author.1
- Nancrede, Charles B. (Charles Beylard), 1847-19211
- National Institute of Pharmacy (U.S.), author.1
- New England Cremation Society, author.1
- Newell, Otis K. (Otis Kimball), 1860- author1
- Nissen, Hartvig, 1856-1924, author1