In 1616 he was granted the privilege of receiving a copy of every published work, though there is no evidence that he ever took advantage of this right.
Knjižnico sestavlja več kot 40.000 enot, ki se nahajajo v veliki dvorani dolgi štiriinpetdeset metrov, devet metrov široki ter deset metrov visoki, z marmornatimi tlemi in lepo izrezljanimi lesenimi policami.