Superb vellum leaf from this important transitional period when books began to be printed from movable type, decorated with metal cut illustrations and combined with hand-painted illuminated initials. Thielman Kerver was a printer in Paris, who worked "in vico sancti Iacobi ad signum Vnicornis & ibidem venales habent" (in Saint Jacob's lane in the sign of the Unicorn where they are also for sale). This leaf has a wonderful picture of the Visitation [the visit of the pregnant Virgin to her cousin Elisabeth, who is herself pregnant with John the Baptist]. The image is a beautiful example of late Gothic style; graceful robes and picturesque buildings in the background and architectural ornamentation. On the verso are Psalms 92 and 99 with illustrations from the Old Testament and captions printed in red.