I know a professor of art history, Ph.D. from Columbia University and currently teaching at the City College of New York, who has written a book on how to write about art. She isn't interested in making money off it, and would be interested in releasing it under a free license for Wikibooks to use. However, she wants:
1) That it come up on a Google search for her name, i.e., that there's some attribution on the pages themselves (not just in the history).
2) That no one other than her change it (presumably other than wikilinking, breaking it into subpages, modifying navigational headers, that sort of thing).
Now, obviously both points are largely against wiki principles, but my impression is that the basic goal of Wikibooks is to publish quality textbooks, and that wiki is just a means to an end here. Would Wikibooks be willing to accept these terms?