Bookbinding materials from male deer and sheep (8)

'bookbinding materials' is the definition.
'buckrams' can be an answer for 'materials' (buckram is a kind of material). I am not certain of the 'bookbinding' bit.

'male deer and sheep' is the wordplay.
'male deer' becomes 'buck' (I've seen this before).
'and' is a charade indicator (letters next to each other).
'sheep' becomes 'rams' (male sheep).
'buck'+'rams'='BUCKRAMS'

'from' is the link.

Can you help me to learn more?