I'm selling my copy of George Lewis' book "A Power Stronger Than Itself: The AACM and American Experimental Music".
It is an exhaustively written, yet very readable account of the AACM and related artists.
The cheapest copy on Amazon is currently $22.15.
I'm asking $18 plus shipping. ($3 U.S., actual cost elsewhere.)
Everything is in excellent condition. I read it once, and there is some visible wear to the edge of the cover (mostly light bending), but all pages are in great shape.
One note - Amazon says this is 728 pages. My copy has 676 pages, and is the same edition that is listed on Amazon. (2009 paperback edition)