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Surname
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Region | Book Title | Catalog # | Notes |
| | Martinus | New Jersey | NJ | The Early Germans of New Jersey | CC940 |
| | Marvel | Accomack | VA | A Somerset Sampler, Families of Old Somerset Co. MD | L002 |
| | Marvel | Kent | DE | Colonial Families of Delaware, Vol. 9 | D0861 |
| | Marvel | Somerset | MD | A Somerset Sampler, Families of Old Somerset Co. MD | L002 |
| | Marvel | Sussex | DE | A Somerset Sampler, Families of Old Somerset Co. MD | L002 |
| | Marye | Virginia | VA | Huguenot Emigration to Virginia | CC675 |
| | Maslin | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Mason | Cape May | NJ | Colonial Families of Cape May, NJ | D048 |
| | Mason | Charles | MD | Early Families of Southern Maryland, Vol. 8 | WB2118 |
| | Mason | Culpeper | VA | Genealogical and Historical Notes on Culpeper County, VA | SHVA079 |
| | Mason | Kent | DE | Colonial Families of Delaware, Vol. 9 | D0861 |
| | Mason | Prince | MD | Early Families of Southern Maryland, Vol. 8 | WB2118 |
| | Mason | Virginia | VA | Virginia Genealogies | CC2630 |
| | Mason | Virginia | VA | Adventurers of Purse and Person, VA 1607-1625 Vol. 2: G-P | G1497 |
| | Mason | Virginia | VA | Virginia Historical Genealogies |
| | Mason, William | Accomack | VA | Colonial Families of the Eastern Shore of VA, Vol. 1 | D145 |
| | Massengill | Southside | VA | Southside Virginia Families, Vol. 1 | CC531 |
| | Massey | Accomack | VA | Colonial Families of the Eastern Shore of MD, Vol. 10 | D1964 |
| | Massey | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Massey | Worcester | MD | Colonial Families of the Eastern Shore of MD, Vol. 10 | D1964 |
| | Mathews | Cape May | NJ | Colonial Families of Cape May, NJ | D048 |
| | Mathews | Virginia | VA | Adventurers of Purse and Person, VA 1607-1625 Vol. 2: G-P | G1497 |
| | Matkin | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 11 | D004 |
| | Matlack | Camden | NJ | First Immigrant Settlers of Newton Township, Old Gloucester Co. West New | CC9751 |
| | Matthews | Camden | NJ | First Immigrant Settlers of Newton Township, Old Gloucester Co. West New | CC9751 |
| | Matthews | Pennsylvania | PA | Welsh Founders of Pennsylvania | CC2230 |
| | Matthiason | Cecil | MD | Colonial Families of the Eastern Shore of MD, Vol. 6 | D1958 |
| | Mauldin | Cecil | MD | Colonial Families of the Eastern Shore of MD, Vol. 6 | D1958 |
| | Maull | Sussex | DE | Colonial Families of Delaware, Vol. 3 | D7609 |
| | Maupin | Williamsburg | VA | Ancestral Lines from Maine to Virginia | CB001 |
| | Maurer | Lancaster | PA | Early Fam of Lancaster, Lebanon & Dauphin Cos., PA | WB1284 |
| | Maurer | Lebanon | PA | Early Fam of Lancaster, Lebanon & Dauphin Cos., PA | WB1284 |
| | Maury | Virginia | VA | Huguenot Emigration to Virginia | CC675 |
| | Maxfield | Kent | DE | Colonial Families of Delaware, Vol. 1 | D1949 |
| | Maxfield | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Maxfield/Maxwell | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 21 | D1224 |
| | Maxwell | Kent | DE | Colonial Families of Delaware, Vol. 1 | D1949 |
| | Maxwell | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Maxwell/Maxfield | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 21 | D1224 |