See abridged ed. of John and Abigail Adams' letters (ed. by M. A. Hogan and C. J. Taylor, 2007); biographies by J. Whitney (1947, repr. 1970), L. E. Richards (1917, repr. 1971), and C. W. Akers (1980). See also bibliography for Adams, John.
Abigail is a female name occurring in Biblical narratives from the Books of Samuel, and reflected in the Books of Chronicles. The name Abigal occurs on one occasion, and is thought by the vast majority of scholars to be an alternate spelling of Abigail. There appear to be two individuals named Abigail:
Abigail's self-styling as a handmaid led to Abigail being the traditional term for a waiting-woman (for example, Abigail, the waiting gentlewoman, in Beaumont and Fletcher's The Scornful Lady, published in 1616).
It is possible for both these women named Abigail to be different accounts of the same woman, as textual scholars regard the account in the Books of Chronicles as ultimately deriving from the Books of Samuel, and the references there to Abigail as a sister of David occur only in the passages which textual scholars attribute to the court history of David, a document which doesn't mention an Abigail as one of David's wives.