This book is THE (and perhaps the only) book for an overlooked genre.
Abstract Comics: The Anthology.
Editor/Author: Andrei Molotiu. Fantagraphics Books, 2009.
If you know comics only by the way of superheros and cute/eccentric animals with thought bubbles, this book presents an entirely new and different world. It can be a bit frustrating depending on the degree to which you expect comics to present an easy-to-follow narrative. There is sequence but any narrative involved has to be supplied by the "reader."
If you're willing to grant the basic idea of an abstract comic, then this is a rewarding and beautiful book to wander and wonder through.
Here is a
[link] to a set of sample pages at the publisher's website.
This
[link] is to Molotiu's Abstact Comics Blog.
(I just realized that this book and the Visual Poetry book have the same publisher. Just to be clear, I have no affiliation with the publisher or the authors.)