Flying to the Promised Land by Paul Johnson. Since 2009 most of my unique pop-up pieces have been made without folds. I use several different types of paper hinges—including dovetails. Each work can be taken to pieces, units changed or damaged sections replaced. Spring action of folded paper is therefore eliminated. Pop-ups open easily & fold flatter than more conventional construction methods. This book is the prototype of a planned limited pop-up edition that never materialized.