A Brief History of Folding
The History of Origami in Japan (Okamura)
Origami Facts (H. Katayama)
Origami History (Joseph Wu's Page)
Two Miscellaneous Collections of Jottings on the History of Origami: Part One By David Lister
Two Miscellaneous Collections of Jottings on the History of Origami: Part Two by David Lister