An excellent post from the ever-thoughtful Bill Tozier revolving around the point that "there can be no selective archive":
Somehow the myths of The Book, of The Editor, the Archive, and even the Authoritative Word, they’ve eaten our ability to hold flexible and contingent opinions. So few of us wonder which book we have in our hands; which edition, which version, which printing, which copy?
http://williamtozier.com/slurry/2008/04/06/why-i-feel-so-strongly-about-...