The Book Art Object blog often has nice posts about how the participants made a book or the thinking behind the structure they chose. The other day Alicia Bailey showed a book based on a Hedi Kyle structure called a panorama book. While I couldn’t find directions, several people on the web mentioned this is a derivation on the flag book.
I think it’s called “panel-book” too. You can find a tutorial here:
http://janedavies-collagejourneys.blogspot.nl/2011/02/panel-book-tutorial.html
best, Annie – the Netherlands