Creator
- Massachusetts Publishing Company1
- Mauriceau, A. M.1
- Maxim, Hudson, 1853-19271
- Maxwell, A. Kirkpatrick1
- Mayer, Jean, 1920-19931
- McDougall-Butler Co.1
- Mcfarland, James P.1
- Meade, Richard K. (Richard Kidder), 1874-1
- Meldola, Raphael, 1849-19151
- Mendeleyev, Dmitry Ivanovich, 1834-19071
- Meyer, Lucy Rider, 1849-19221
- Miladay Publication Corporation1
- Miles, W. M.1
- Miller, J. H.1
- Miskella, William J. (William James), 1882-1
- Mitchell Mining Company1
- Mitchell, C. Ainsworth (Charles Ainsworth), 1867-19481
- Moitessier, A. (Albert), 1833-18891
- Monroe Drug Company1
- Moore, Gideon E.1