All 53 images for Card Sorting are now available from the Rosenfeld Media Flickr site. We encourage you to grab and include them into your own presentations. But please be sure to mention where they come from: cite the book's title, the author's name, the publisher, date, and the book site's URL. Here's an example:

Figure 3.11 from Card Sorting: Designing Usable Categories by Donna Spencer; Rosenfeld Media, 2009. http://www.rosenfeldmedia.com/books/cardsorting/

Enjoy!