- Martin, Thomas Commerford, 1856-1924, author1
- Maryland. State Board of Health.1
- Matas, Rudolph, 1860-19571
- Matto, David.1
- Mays, Thomas J. (Thomas Jefferson), 1846-1918, author1
- McCulloch, Mary P., author1
- McCurdy, Stewart LeRoy, 1859-1931, author1
- McKee, E. S., author1
- McLaren, E. T. (Elizabeth T.), author1
- McMurtry, L. S. (Lewis Samuel), 1850-1924, author1
- Medical Oxygen Compound Co., author.1
- Mellier Drug Company.1
- Meyer, Willy, 1858-1932, author1
- Michigan. State Board of Health, author.1
- Michigan. State Board of Health.1
- Millard, Henry B., 1832-1893 author1
- Miller, Henry Lewis.1
- Miller, John A. (John Alexander)1
- Mills, Charles K. (Charles Karsner), 1845-1931, author1
- Minot, Charles Sedgwick, 1852-19141