Book by art historian Henri Bouchut on the <a href="https://en.wikipedia.org/wiki/Bois_Protat" class="extiw" title="en:Bois Protat">Bois Protat</a>, the earliest surviving European woodblock for printing
<a href="//commons.wikimedia.org/w/index.php?title=Henri_Bouchot&amp;action=edit&amp;redlink=1" class="new" title="Henri Bouchot (page does not exist)">Henri Bouchot</a>
<a rel="nofollow" class="external text" href="http://gallica.bnf.fr/ark:/12148/bpt6k503945w">Bibliothèque nationale de France</a>