| Name | Line | Page | District | Soundex
| Maas, A. G. | 18 | 6A | 58 | M200
| | Macklin, Elgin | 4 | 1A | 62 | M245
| | Madden, George F. | 91 | 7B | 65 | M350
| | Madrid, Claro | 35 | 2A | 63 | M363
| | Madsen, Alphonzo B. | 45 | 1A | 59 | M325
| | Madsen, Andrew O. | 42 | 1A | 59 | M325
| | Madsen, John P. | 57 | 9B | 61 | M325
| | Madsen, Peter | 34 | 4A | 64 | M325
| | Madson, James | 35 | 12A | 61 | M325
| | Mahaffey, James L. Sr. | 95 | 12B | 57 | M100
| | Mahoney, Emmit P. | 23 | 1A | 62 | M500
| | Malnar, Stephen | 61 | 3B | 60 | M456
| | Mandrysh, Constance | 61 | 6B | 59 | M536
| | Marchant, David J. | 20 | 3A | 64 | M625
| | Marchant, Dolphus C. | 45 | 3A | 64 | M625
| | Marchant, Dungan W. | 77 | 14B | 65 | M625
| | Marchant, Franklin R. | 30 | 6A | 59 | M625
| | Marchant, Ray | 8 | 7A | 59 | M625
| | Marchant, Robert H. C. | 88 | 20B | 65 | M625
| | Marett, Ephriam | 47 | 20A | 65 | M630
| | Marett, Marvell P. | 60 | 20B | 65 | M630
| | Markus, Max | 9 | 3A | 61 | M622
| | Marrell, Charles E. | 48 | 2A | 57 | M640
| | Marrell, Harriet A. | 95 | 20B | 65 | M640
| | Marrell, William P. | 56 | 2B | 57 | M640
| | Marse, Charles E. | 11 | 1A | 173 | M620
| | Marshal, Robert | 35 | 24A | 65 | M624
| | Marshall, Clara | 94 | 2B | 64 | M624
| | Marshall, Henery C. | 93 | 23B | 65 | M624
| | Marsing, Bertram | 52 | 10B | 61 | M625
| | Marsing, Carlos | 53 | 10B | 61 | M625
| | Marsing, Lars J. | 87 | 11B | 57 | M625
| | Marsing, Martin L. | 44 | 10A | 61 | M625
| | Martin, John M. | 1 | 6A | 64 | M635
| | Mason, Jno. M. | 94 | 5B | 63 | M250
| | Mathew, Jefferson A. | 44 | 22A | 65 | M300
| | Mathews, Claud A. | 2 | 3A | 57 | M320
| | Mathews, James W. | 8 | 1A | 65 | M320
| | Mathews, William J. | 39 | 5A | 64 | M320
| | Matt, Samul D. | 73 | 4B | 62 | M300
| | Maxfield, Arthur W. | 80 | 9B | 57 | M214
| | Maxwell, Arthur F. | 60 | 8B | 57 | M240
| | Maxwell, Authur W. | 42 | 6A | 63 | M240
| | Maxwell, Bruce | 62 | 4B | 63 | M240
| | Maxwell, Clista | 44 | 3A | 64 | M240
| | Maxwell, Ellen | 85 | 4B | 63 | M240
| | Maxwell, Laurena Jno | 82 | 4B | 63 | M240
| | May, Jsse P. | 51 | 6B | 65 | M000
| | Mayhew, Austin S. | 54 | 12B | 61 | M000
| | Mayhew, Eligah W. | 27 | 11A | 61 | M000
| | Mayhew, Martha | 55 | 12B | 61 | M000
| | Mayhew, Otto B. | 14 | 11A | 59 | M000
| | Mayhew, Shelby | 56 | 12B | 61 | M000
| | Mayhew, Walter F. | 44 | 12A | 61 | M000
| | Mayhew, Walter R. | 52 | 12B | 61 | M000
| | Mayo, John | 32 | 9A | 60 | M000
| | Mazem, John | 17 | 3A | 62 | M250
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