The textbook in question is a required purchase for a course entitled "Global Visual and Material Culture, Prehistory to 1800." Any art that would appear in that book would be public domain — it's all over 212 years old at this point, after all. Still, since the book's publisher could not get clearance to use the pictures from Stokstad and Drucker Images, a decision was made to print the incredibly expensive art book without pictures of any kind. Students who purchase the book are instead given access to a web resource for viewing the art that should have appeared on the book's pages.
http://news.yahoo.com/blogs/technology-blog/180-art-textbook-devoid-pictures-thanks-absurd-copyright-214921172.html
http://news.yahoo.com/blogs/technology-blog/180-art-textbook-devoid-pictures-thanks-absurd-copyright-214921172.html