Historical forms of binding

Coptic binding: a method of sewing leaves/pages together
Ethiopian binding
Long-stitch bookbinding
Islamic bookcover with a distinctive flap on the back cover that wraps around to the front when the book is closed.
Wooden-board binding
Limp vellum binding
Calf binding (“leather-bound”)
Paper case binding
In-board cloth binding
Cased cloth binding
Bradel binding
Traditional Chinese and Korean bookbinding and Japanese stab binding
Girdle binding
Anthropodermic bibliopegy (rare or fictional) bookbinding in human skin.
Secret Belgian binding (or “criss-cross binding”), invented in 1986, was erroneously identified as a historical method.