Gilhofer & Ranschburg (Wien); Gilhofer, Buch- und Kunstantiquariat; Gilhofer & Ranschburg: Katalog (Nr. 257): A mediaeval library of medical and astronomical books and manuscripts: comprising also a collection of 300 early portraits of physicians (Wien: Gilhofer & Ranschburg, 1936)

No. 6. Johannes de Sacrobosco. Sphaera, in German by Konrad von Megenberg.
Vellum-Manuscript, first half of the XVth Century.
(Reduced.')

PLATE 1.