The Tools of Omar is a collection of nail-writing effects. It collects the AME manuscripts, The Naked Thought, The Gilded Quill, The OSS Writer, Challenges, The Invisible Book. Plus history and types of writers. Plus The Ghost Writer and other new effects.
Only about 40 copies were sold in total. So this is an extremely rare book, a true collector item as well as a treasure chest of effects and secrets.
[Note that page 97 is blank. At least it is blank in all copies I have seen.]