1. Origami Design Secrets / Robert J. Lang - This book, by retired laser physicist and origami master, describes the methods developed over the last couple of decades in origami design. It provides a good understanding of how modern, complex origami models are created. Unlike most origami books, it contains mostly text and is not an easy read. There is also an appendix detailing the mathematics behind some of the methods, mostly from the realm of Graph Theory. It is a treasure in understanding crease-patterns. See Gilad Aharoni’s book review.

  2. Origami for the Connoisseur / Kunihiko Kasahara, Toshie Takahma - A classic book. It includes many classical models, lots of mathematical insights and covers a broad range of origami fields - modules, geometrical, figural, technical, etc. See Gilad Aharoni’s book review.

  3. Animal Origami for the Enthusiast / John Montrol - One of Montrol’s earlier books (circa 1985), it has 25 models which embody the magic origami held for me as a child. It is a wonder of what can be achieved using simple folding techniques. The folding sequences are natural and beautiful all by themselves. See Gilad Aharoni’s book review.

  4. Origami to Astonish and Amuse / Jeremy Shafer - This book contains a lot of models, unique in their wacky, unconventional character. It is a must. See Gilad Aharoni’s book review.