Wolfenbüttel, Herzog-August-Bibliothek MS. August 3772. [77. 2. Aug. 8vo.) 18 folios. Parchment. 150x100mm. 15th Century. 1. f1r-14v Speculum alchymie [Donum Dei?] 2. f15-17 Ueber die Herstellung des Lapis philosophorum [in Latin and German.] 3. f17-18v De lapide mirabili eiusque confectione.