(k) Six photographs from the Gisle-Codex at Osnabrück, a Gradual written and illuminated in that neighbourhood by the nun Gisela von Kersenbrock, circ. 1300 (but see G. J. Hoogewerff, De Noord-Nederlandsche Schilderkunst, pp. 87-91). See Alfred Stange, Deutsche Malerei der Gotik, Bd. i, 1934, p....