Mellon Collection, Yale University Library MS. 131. 105 folios. Paper. 161x108mm. 18th Century [c. 1790.] 1. Federico Gualdi. Philosophia hermetica [in Italian verse.] [Illustrated with 13 pen and watercolour circular drawings.] 2. Marcus Eugenius Bonacina. Compendiolum de praeparatione auri potabilis veri. [Composed at Austerlitz in 1616 according to the dedicatory epistle directed to Laszlo Wellen, an imperial counsellor and chamberlain to Archduke Maximilian.] [Illustrated with 10 emblematic figures, divided into two sets of five.]