Sir Gawain Companion

To any of you who are thinking of incorporating Sir Gawain and the Green Knight into your papers, this is a good book. I have taken it from the library but am willing to part with it at some point. It has really a really interesting historical introduction and then a bunch of scholarly articles all compiled into one place. There's some supposition on authorial identity, and then a whole section on the poet's culture. There are also three different versions of Sir Gawain included in the back, and photos of the original manuscript as well. The early Brit Lit Norton may be of some use as well...

Brewer, D.S. A Companion to the Gawain-Poet. New York: Boydell & Brewer Ltd., 1997. Print.