I'd add one more that I feel is the best bang for the buck to give you a clear picture of how everything fits together, and the order to proceed -
"Building the Kentucky Rifle" by Jim Johnson. Softcover, still available, I think $10 or under, from Log Cabin Shop, MBS, etc. Excellent, clear drawings and concise text.
If it were me, I'd go with a simple book about building, and invest the bigger money on a book with photos of originals in the style I am interested in - RCA, Kindig, Dr. Whisker's books, etc.
I would also seek out someone who lives near you who has built a few and can help you with your first build. Or at least go to some shows and bring your work along and ask good builders for advice - you will find a five minute conversation with someone like Jim Chambers in person can open your eyes to a lot of things that will make your project go more smoothly and come out better in the end.
Good luck
Guy