Hi Charles, No followup books to Dr Howard Faust's Book, to my knowledge. Prior to Dr Faust's passing, he was working on a followup book. Most of his updated research was lost recently in a flood at his home. A book that concentrates on Foust's from North and South Carolina, along with other southern states, is out of print, but can still be found. The book is titled, "The Family of John Foust and Anna Barbara Albrecht and Allied Families". The Author was Mozette Foust and the book was printed in 1982. It was printed by Waco Printing and Stationery, of Waco Texas. The Library of Congress Catalog Card Number is # 82-71514. I was thrilled to find a copy of the book 3 years ago. Goodluck. David Faust.