The New Origami, Steve Biddle, Megumi Biddle,
St. Martin's Press, 1993, 0312080379. Like any modern art,
origami comprises many styles and genders. This eclectic
work is ideal for the novice choosing preferences. Diagrams
still unmatched.
Folding the Universe: Origami from Angelfish to Zen,
Peter Engel, Vintage Books, 1989. Reprinted in 1994 by Dover
Publications as Origami from Angelfish to Zen, ISBN
0486281388. Half a series of revolutionary models, which
(together with Jun Maekawa) started the modern "technical folding"
trend, half a collection of essays on origami and its relation
to life, chaos and architecture.
Origami Omnibus, Kunihiko Kasahara,
Japan Publications, 1988, 087040699X. The nearest thing to
an origami encyclopedia, lacking only a resource list,
a historical retrospective and a discussion of media.
Origami for the Connoisseur, Kunihiko Kasahara
and Toshie Takahama, Japan Publications Inc. 1987, 0870406701.
English translation of Top Origami (in Japanese),
Sanrio, 1985, 4387850965.
Reprinted in 1998, one of true classic origami books.
A Arte dos Mestres de Origami (Art of Origami Masters),
edited by Mari Kanegae,
Aliança Cultural Brasil-Japão, Brazil, 1997, 8586822019. In Portuguese,
a big compilation of modern works, mostly by Japanese and American
authors.
Bara To Origami To Suugaku To (in Japanese),
Toshikazu Kawasaki, Morikita Shuppan, 4627016719.
English translation is Rose, Origami & Math,
Japan Publications, Japan, 2005, 4889961844.
A Plethora of Polyhedra in Origami, John Montroll,
Antroll/Dover Publications 2002, 0486422712. Twenty-seven polyhedra
folded from a single sheet: regular, sunken, skeletons, prisms,
dipyramids and more.
季刊をる (Quarterly ORU) issue 4, Japan, Spring 1994.
A beautiful mix of origami magazine and coffee-table book,
unfortunately not published anymore. Japanese text
Origami Tanteidan 3rd Convention Book,
Origami Tanteidan, Japan, 1997. If all you want is
Kawahata's Jedi Master Yoda, you'll find similar
diagrams at the Spanish Origami Association's site.