Sorry, just seeing you post now. My book is not for sale there as far as I know; only through the internet or the publisher, Higginson Books. I have since my publication taken a DNA test and there is some question as to some of my findings, although seemingly very strong through documented records.
My first bit of advice, if you would like to use my book as reference, it can be found in the Amelia County public library (or several other libraries in Virginia like Richmond). Please note that of my family tree, until I can get this all sorted out, the firm findings only go back as far as John Carter of Amelia (1775 - 1852). Also note, that I connected Thomas Carter of Amelia (1780 - 1828) to the son of Rawleigh Carter (d.1820) mentioned in his will in Nottoway. There may be some additional DNA evidence that suggests this may not be true. The book will at least give you well footnoted sources from which you can look up the documents yourself if you desire; some documents I transcribed in the book.
Secondly, the libraries tend not to be as good in the counties. The LIbrary of Virginia in Richmond may have some good information for you, but I find pulling original court documents at the Circuit Courthouses is more informative. Wills are especially good, as they name the most people, ususally.
Good luck. I am trying to track down a Benjamin Carter, found in Nottoway in 1802. If you find him, let me know.