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Surname
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Region | Book Title | Catalog # | Notes |
| | Laing | Middlesex | NJ | Colonial Families of New Jersey, Vol. 1 | D127 |
| | Lake | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 19 | D122 |
| | Lake | New Jersey | NJ | Pioneer Families of Northwestern New Jersey | CC9157 |
| | Laker | Tidewater | VA | Tidewater VA Families: Generations Beyond | G1383 |
| | Lamb | Anne Arundel | MD | Colonial Families of Anne Arundel County, MD | D1252 |
| | Lamb | Kent | MD | Colonial Families of the Eastern Shore of MD, Vol. 1 | D1180 |
| | Lambden | Worcester | MD | Colonial Families of the Eastern Shore of MD, Vol. 9 | D001 |
| | Lambdin | Queen | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | Lambdin | Talbot | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | Lamberson | Worcester | MD | Colonial Families of the Eastern Shore of MD, Vol. 9 | D001 |
| | Lamon | Culpeper | VA | Genealogical and Historical Notes on Culpeper County, VA | SHVA079 |
| | Lancaster | Bucks | PA | Early Friends Families of Bucks County, PA | CC4960 |
| | Lancelot | Westmorelan | VA | Colonial Families of Northern Neck of VA, Vol. 1 | D1987 |
| | Landon | Sussex | NJ | Genealogies of New Jersey | G4058 |
| | Landon | Warren | NJ | Genealogies of New Jersey | G4058 |
| | Lane | Queen | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | Lane | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 9 | D001 |
| | Lane | Southside | VA | Southside Virginia Families, Vol. 2 | CC532 |
| | Lane | Talbot | MD | Colonial Families of the Eastern Shore of MD, Vol. 5 | D1956 |
| | Lane | Westmorelan | VA | Colonial Families of Northern Neck of VA, Vol. 1 | D1987 |
| | Lane | Worcester | MD | Colonial Families of the Eastern Shore of MD, Vol. 9 | D001 |
| | Langrell | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 13 | D027 |
| | Langworth | Southern | MD | Early Families of Southern Maryland, Vol. 1 | WB0594 |
| | Lanier | Southside | VA | Southside Virginia Families, Vol. 1 | CC531 |
| | Lanius | York | PA | Early Families of York Co. PA, Vol. 1 | WB0925 |
| | Lanning | Hunterdon | NJ | Gen. of Early Settlers in Trenton & Ewing "Old Hunterdon", NJ | CC1150 |
| | Lanning | New Jersey | NJ | Pioneer Families of Northwestern New Jersey | CC9157 |
| | Lanterman | New Jersey | NJ | Pioneer Families of Northwestern New Jersey | CC9157 |
| | Larramore | Cecil | MD | Colonial Families of the Eastern Shore of MD, Vol. 6 | D1958 |
| | Lashley | Southern | MD | Early Families of Southern Maryland, Vol. 3 | WB0833 |
| | Lassell | Kent | MD | Colonial Families of the Eastern Shore of MD, Vo1. 2 | D1238 |
| | Laughton | Cape May | NJ | Colonial Families of Cape May, NJ | D048 |
| | Lawrence | Cape May | NJ | Colonial Families of Cape May, NJ | D048 |
| | Lawrence | Southern | MD | Early Families of Southern Maryland, Vol. 2 | WB0736 |
| | Laws | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 8 | D1960 |
| | Laydon | Virginia | VA | Adventurers of Purse and Person, VA 1607-1625 Vol. 2: G-P | G1497 |
| | Layfield | Worcester | MD | Colonial Families of the Eastern Shore of MD, Vol. 8 | D1960 |
| | Layton | Dorchester | MD | Colonial Families of the Eastern Shore of MD, Vol. 7 | D1959 |
| | Layton | Somerset | MD | Colonial Families of the Eastern Shore of MD, Vol. 7 | D1959 |