- MacInnis, Grace Woodsworth, 1905-19911
- Masefield, John, 1878-19671
- Maugham, W. Somerset (William Somerset), 1874-19651
- McElney, Brian S.1
- Millington Limited1
- Moe, Louis, 1854-19451
- Munday, Anthony, 1553-16331
- Newcombe, C. F. (Charles Frederic), 1851-19241
- No Business As Usual Action Network1
- Osborn, E. B. (Edward Bolland), 1867-19381
- Paucker, Pauline1
- Pemberton, J. Despard (Joseph Despard), 1821-18931
- Plautus, Titus Maccius1
- Police Against the New World Order1
- Pritchett, David L.1
- Purcell, Henry, 1659-16951
- Roberts, Francis, 1609-16751
- Roux, A. (Printer), active 18851
- Save America's Forests (Organization)1
- Shortt, Adam, 1859-19311