For each book I own I have included the information printed on the back of the book and the entries for that book in the Library of Congress LOCIS database. I have also typed in a few reviews I have found here and there, and I hope I haven't broken too many copyrights in doing this...
Please check the Reader comments as well for information added by the readers of Abbey's Web.
You can also buy from the Abbey's Web bookstore.
Dream Garden Press also have most, if not all, Edward Abbey books for sale.
The Library of Congress database and many other bibliographical databases can be searched using this Z39.50 search form.
The University of Arizona Library has a Special Collection on Edward Abbey. The journals Abbey kept during his lifetime are kept here among other things. You can search their database using SABIO, a telnet search interface, but read the SABIO User Guide first.
I've never yet read a review of one of my books that I couldn't have written much better myself.