without spring-back or hubs
An economical form of blankbook binding used in
the United States. The book is bound without a SPRING-BACK (1) orHUBS and is usually
covered in half leather with canvas or a lighter
cloth on the sides. Although the book sometimes
has a hollow back, it more often has a tight back,
as the latter imparts additional strength to what
is essentially a weak form of blankbook binding.