While scanned PDF versions of older convention books sometimes circulate online, downloading a PDF of without purchasing it is generally frowned upon in the origami community. Unlike mass-produced commercial books, the print runs for Tanteidan books are often limited.
This volume is highly regarded for its complex and "super complex" designs from renowned artists: by Satoshi Kamiya Chick by Jun Maekawa Raccoon 2018 by Kyohei Katsuta Black Footed Ferret by Quentin Trollip Mouse on the Cheese Moon by Xiaoxian Huang Hatching Sea Turtle by Gen Hagiwara Alternatives and Archives The 26th Origami Tanteidan Convention Book Vol.26 NEW origami tanteidan convention 26 pdf
Buy the physical book. It is spiral-bound (usually) which allows it to lie flat while you fold, a critical feature when navigating 100+ step diagrams. While scanned PDF versions of older convention books
