B-Br 14650-59 (cat.nr. 3236)

Manuscript, containing a 10th century office for Lambertus; the oldest known form of Low Countries notation.

Literature

	Auda: Étienne de Liège, pp. 122-197 (edition: pp. 187-197)
	De Loos, p. 80 and afb. 16
	Van Paus Gregorius tot Stockhausen, nr. 3 and plate II