: You can purchase directly from Gallery Origami House in Japan.
: Diagrams are typically provided in Japanese and English, or the designer's native language. origami tanteidan convention 26 pdf
Be cautious of sites claiming to offer a "free PDF download" of this book. While individual diagrams are sometimes shared on forums or community sites like Scribd , many of these links are unofficial and may contain low-quality scans. To support the creators and JOAS, it is recommended to purchase the authorized physical volume. Origami Tanteidan Convention book Vol.26 - origamilib : You can purchase directly from Gallery Origami