The last chapter of the book, "Abraham Lincoln" by Benjamin Thomas, is
called "Lincoln Literature," and it names some more books which contain info
on Lincoln's genealogy. Listed as reliable books on Lincoln's ancestry are:
Louis A. Warren's, "Lincoln's Parentage and Childhood," Waldo
Lincoln's,
"History of the Lincoln Family," and Barton's, "The Lineage of
Lincoln," and
"The Paternity of Lincoln."
More on Nancy Hanks soon.
Susan