The Real Story is probably the best alongside all 3 Alan Hall books.
NG Taylors book has some nice pics but is not all that accurate.
Other books available are The Gold Medal toy for boys by Frances Baird which is just OK and then there is The Official Dossier by Ian Harrison which I dont have but have not heard anything good about.
I would concentrate on getting all the official equipment manuals. You can pick up the 40th ones cheap enough to flip through regularly too without destroying old originals.