I have only recently been introduced to some works of David Barton and am impressed with his fountain of information.
I will be forwarding this link to everyone I know and suggest it as a must watch. It is a series of four clips from his discussion with Glenn Beck on the history of the 2A. It will take some time to view, but very well worth it.
David Barton and Glenn Beck Explore the Amazing History of the Second Amendment | Video | TheBlaze.com