On this site, I've considered and posted how to fold "連鶴/Renzuru" while referencing the diagrams in the book which is called “秘伝千羽鶴折形/Hiden-Senbazuru-Orikata”.
The book was published in 1797.
Renzuru means connected cranes are made of only one paper without glue and tape.
I've been translating this site into English from Japanese little by little.
