 | MacAloney, Harvey John, 1896- dn | (1) |
| MacConnell, William Preston, 1918- 2n | (1) |
| Mackensen, Otto, 1904- 4n | (1) |
| Mackie, Arthur B. 1n | (1) |
| Mader, Donald Lewis. dn | (1) |
| Magleby, Richard S. 4n | (1) |
| Maida, Peter R. (Peter Richard), 1938- 4n | (1) |
| Maker, H. J. 1n | (12) |
| Malcolm, Stanley E. (Stanley Edward) | (1) |
| Mallison, E. D. (Earl Dewey), 1898- 4n | (1) |
| Malm, Norman R. 4n | (1) |
| Malphrus, Lewis D. (Lewis Daniel), | (2) |
| Manchester, Alden Coe, 1922- 2n | (5) |
| Mangialardi, Gino J., 1934- 1n | (2) |
| Manny, Elsie S. (Elsie Sherman), 1900- 4n | (1) |
| Manson, Philip W. (Philip William), 1905- 4n | (1) |
| Manthy, Robert S. cn | (1) |
| Manuel, Milton L., 1919- 4n | (1) |
| Marcin, Thomas C. 1n | (1) |
| Marcin, Thomas C. cn | (1) |
| Marcus, Steven R. | (1) |
| Marden, Richard M. | (1) |
| Margolena, Lubow A. 1n | (1) |
| Marin, Carmen M. cn | (1) |
| Markwardt, L. J. (Lorraine Joseph), 1889- 4n | (1) |
| Marousky, Francis J. (Francis John), 1935- 4n | (1) |
| Marquis, David A. cn | (2) |
| Marschner, Francis J. (Francis Joseph), 1882-1960. 4n | (1) |
| Marsden, Stanley J., 1897- 4n | (1) |
| Marshall, Douglas G. 1n | (1) |
| Martens, David G. | (1) |
| Martens, David G. cn | (2) |
| Martin, A. Jeff. cn | (1) |
| Martin, Franklin W. 1n | (2) |
| Martin, Gene (Gene Ellis), | (1) |
| Martin, S. Clark (Samuel Clark), 1916- 4n | (1) |
| Martin, William Edwin. | (1) |
| Martinelli, M. cn | (1) |
| Marty, Robert Jay, | (1) |
| Marty, Robert Jay, 1931- 2n | (1) |
| Massey, Calvin L. (Calvin Le Roy) 4n | (1) |
| Massie, Michael R. C. | (1) |
| Mather, J. Warren (James Warren), 1911- 1n | (2) |
| Mathia, Gene A. cn | (7) |
| Mathis, A. G. (Anthony George), 1908- 4n | (2) |
| Matlock, W. G. | (1) |
| Matsumoto, Masao. 1n | (1) |
| Matthews, Tresa H. 4n | (2) |
| May, Curtis, 1897- 4n | (2) |
| Mayer, M. S., 1935- 4n | (1) |
| McAlpine, John D. 4n | (1) |
| McArthur, J'Wayne, 1935- 4n | (1) |
| McCarty, M. K. 4n | (1) |
| McCauley, Orris D. | (2) |
| McCay, Roger E. | (1) |
| McClurkin, D. C. | (1) |
| McColloch, Lacy Porter, 1907- 2n | (3) |
| McComb, Charles Wight, | (1) |
| McConnell, Robert M. (Robert Michael), 1936- 4n | (1) |
| McConnen, R. J., 1930- 1n | (1) |
| McCoy, John Henry, 1912- dn | (1) |
| McCoy, John L. (John Louis), 1933- 4n | (1) |
| McCullough, Helen E., 1893- 4n | (2) |
| McDonald, Lehman L. 1n | (1) |
| McDonald, Philip M. cn | (1) |
| McElroy, Robert C. (Robert Cecil), 1919- 4n | (1) |
| McElveen, Jackson V. (Jackson Vabl), 1922- 4n | (1) |
| McElveen, Jackson V. (Jackson Vahl), 1922- 4n | (2) |
| McEnroe, William D. 4n | (1) |
| McFadden, Wm. D. (William D.) 4n | (1) |
| McGrew, John R. (John Roberts), 1923- 1n | (4) |
| McQuilkin, William Everett, | (1) |
| Mead, Walter J. cn | (1) |
| Mech, L. David cn | (1) |
| Meeuwig, Richard O. cn | (1) |
| Megahan, Walter F. cn | (1) |
| Melton, Bill. 1n | (2) |
| Menanteau-Horta, Darâio, 1937- 4n | (1) |
| Mendel, Joseph John, | (1) |
| Menzel, R. G. (Ronald G.), 1924- 4n | (1) |
| Menzie, Elmer L. | (2) |
| Merz, Robert William, | (1) |
| Mesavage, Clement. 4n | (1) |
| Meyer, H. Arthur (Hans Arthur), | (1) |
| Mickel, Clarence E. (Clarence Eugene), 1892- 4n | (1) |
| Midwest Fish and Wildlife Conference (30th : 1968 : Columbus, Ohio) | (1) |
| Mighell, Ronald L. (Ronald Lester), 1902- 4n | (1) |
| Mikes, Richard J. 4n | (1) |
| Miklius, Walter, 1928- 1n | (1) |
| Miles, James F. cn | (1) |
| Miller, Bill R., 1933- cn | (1) |
| Miller, David Hewitt, 1918- dn | (1) |
| Miller, Marvin E., 1934- 4n | (1) |
| Miller, W. D. (William Dykstra), | (1) |
| Miller, William C. (William Clarence), | (1) |
| Mills, Theodora (Theodora Ten Broeke), 1913- 4n | (1) |
| Mills, Thomas J. (Thomas John), 1946- 1n | (1) |
| Miner, Bert D. (Bert Dean), 1926- 4n | (1) |
| Mirov, N. T. (Nicholas Tiho), 1893- 4n | (1) |
| Missiaen, Edmond. 1n | (2) |
| Mitchell, John W. (John William), 1905- 4n | (1) |
| Mitlin, Luceille Liston, 1918- 4n | (1) |
| International Shrub Symposium (1971 : Utah State University) mn | (1) |
| Northeastern Forest Insect Work Conference (3rd : 1970 : New Haven) mn | (1) |
| Mo, William Y. 1n | (1) |
| Moe, Lyle E. (Lyle Eugene), 1934- 4n | (4) |
| Moede, Herbert Holms, 1900- 2n | (3) |
| Moeller, George H. | (2) |
| Monlux, William S. 4n | (1) |
| Moore, Clarence, 1919- 1n | (1) |
| Moore, Clarence A., 1919- 1n | (1) |
| Mordoff, Richard Alan, | (1) |
| Morgan, Quevedo Martin, 1918- 1n | (5) |
| Moslemi, Ali Ashraf, | (1) |
| Moyer, D. David. 1n | (1) |
| Muir, M. K. (Melvin K.), 1932- 4n | (1) |
| Muller, Cornelius H. (Cornelius Herman), 1909- 4n | (1) |
| Mun, Sung-gyu, | (1) |
| Munger, James A. (James Arthur), 1930- 4n | (1) |
| Murphy, James L., | (1) |
| Mustonen, Seppo E. 4n | (1) |
| Myers, Clifford A. (Clifford Albert), | (1) |
| Myers, Kenneth Hayes, 1898- 4n | (1) |
| Myles, George A. cn | (1) |
| Myrick, D. C. 4n | (1) |