File:Cherryh's Fortress series book covers.png

Summary
The covers of the five books in the The Fortress Series: Fortress in the Eye of Time, Fortress of Eagles, Fortress of Owls, Fortress of Dragons, and Fortress of Ice.

Fair use for The Fortress Series
The use of this image in the article named / linked above is claimed as Fair use of copyrighted material because:
 * 1) it is a low resolution copy of a book cover;
 * 2) the article named above concerns the publication in question;
 * 3) the inclusion of the image in the named article makes a significant contribution to the article because it identifies the publication in question;
 * 4) no free version of the image is available that would serve the equivalent purpose;
 * 5) the inclusion of the image in the named article does not limit the copyright owner's rights to sell the original publication in any way;
 * 6) the image cannot be used to replace the original market role of the publication in question.