I had an old dummy book from a printer, which is just bound blank paper with no covers. I gave it to Michael, and he started a book about Egypt. So far it has a cover, a map of Egypt (with grid lines) locating Thebes (D5 in case you were wondering), and an elevation of the Sphinx (66' 8" high, 240' long - Michael can quote that on demand). This barely-started book has been lying around for ages, and yesterday Marcus found it.
Marcus: Can I fill in a chapter of your Egypt book?
Michael: NO! That's all my research.