An embroidered binding in purple satin with seed perls and bullion on a copy of The Whole Book of Psalms, London, 1641.
Madrake root...The Mandrake (Italian: La Mandragola; written in 1518 and first printed in 1524) is a satirical play by Italian Renaissance writer Niccolò Machiavelli. Its tale of the corruption of Italian society was written while Machiavelli was in exile, allegedly having plotted against the Medici. The play was written between 1504 and 1518 and first performed in 1518.
Who doesn't want a secret door in their library?