- Separate endleaves are those added by a bookbinder to a pre-existing textblock, either manuscript or printed, and together with the textblock make up a complete bookblock. Although made from a limited number of components, these components can be combined in a seemingly endless number of different endleaf formats. They can also be made from a large number of different materials or combinations of materials. The importance of describing endleaf formats in detail comes from the association between certain endleaf formats and different types of binding, national provenances and even individual owners and binders.
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