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Surname
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Region | Book Title | Catalog # | Notes |
| | May | Springfield | OH | Ancestral Lines from Maine to Virginia | CB001 |
| | May | Sussex | DE | Colonial Families of Delaware, Vol. 3 | D7609 |
| | Mayhew, William | Maryland | MD | Provincial Families of Maryland, Vol. 1 | WB1555 |
| | McBride | Kent | DE | Colonial Families of Delaware, Vol. 9 | D0861 |
| | McCan | Kent | MD | Colonial Families of the Eastern Shore of MD, Vo1. 2 | D1238 |
| | McCarty | Bucks | PA | Early Friends Families of Bucks County, PA | CC4960 |
| | McCarty | Virginia | VA | Virginia Genealogies | CC2630 |
| | McCarty | Westmorelan | VA | Colonial Families of Northern Neck of VA, Vol. 1 | D1987 |
| | McCarty/Carty | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 21 | D1224 | Revised from Vol 2 |
| | McClean | Queen | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | McClean | Talbot | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | McClement | Kent | DE | Colonial Families of Delaware, Vol. 8 | D0861 |
| | McClester | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 22 | D1225 |
| | McCord | New Jersey | NJ | Pioneer Families of Northwestern New Jersey | CC9157 |
| | McCormick | Pennsylvania | PA | Pennsylvania Genealogies | CC1620 |
| | McCracken | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 7 | D1959 | limited information |
| | McDermott | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | McGahey | Rockingham | VA | Men of Mark & Repres. Citizens of Harrisonburg & Rockingham Co. VA | CC9574 |
| | McGrath | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 15 | D053 |
| | McGraw | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 13 | D027 |
| | McGraw | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 15 | D053 |
| | McGuffin | Rockingham | VA | Men of Mark & Repres. Citizens of Harrisonburg & Rockingham Co. VA | CC9574 |
| | McIlvaine | Hunterdon | NJ | Gen. of Early Settlers in Trenton & Ewing "Old Hunterdon", NJ | CC1150 |
| | McIlvaine | Sussex | DE | Colonial Families of Delaware, Vol. 4 | D005 |
| | McKain | Southside | VA | Southside Virginia Families, Vol. 2 | CC532 |
| | McKee | New Castle | DE | Colonial Families of Delaware, Vol. 5 | D038 |
| | McNair | Pennsylvania | PA | Pennsylvania Genealogies | CC1620 |
| | McNemara | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 16 | D057 |
| | McShane | Hunterdon | NJ | Genealogies of New Jersey | G4058 |
| | Mead | Anne Arundel | MD | Colonial Families of Anne Arundel County, MD | D1252 |
| | Meconicon | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 21 | D1224 |
| | Meconicon | Queen | MD | Colonial Families of the Eastern Shore of MD, Vol. 21 | D1224 |
| | Medford | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 16 | D057 |
| | Medford | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Meekins | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 13 | D027 |
| | Meeks | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Megill | Monmouth | NJ | Genealogies of New Jersey | G4058 |
| | Mehn, Georg | Maryland | MD | Provincial Families of Maryland, Vol. 1 | WB1555 |
| | Melson | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 9 | D001 |