Peter Suber has published "A Living Open Book" in Ebooks in Education: Realising The Vision.
Here's an excerpt:
This is a case study of my short book, Open Access (Suber 2012a). The book is not "enhanced" in the way that a growing number of digital academic books are enhanced. It has no graphics, no multimedia, and no interactivity beyond links, and does not offer different layers or pathways for readers at different levels. From that point of the view the book is conventional and text-oriented. But it has two other enhancements worth highlighting. First, the full text is open access, which benefits authors and readers, and sometimes also publishers. Second, the book has a companion web site of open-access updates and supplements, which benefits all three groups.
Digital Scholarship | "A Quarter-Century as an Open Access Publisher"
