Köln. Universitäts- und Stadtbibliothek. Manuscript. 979. [Processional]
 leaves. Processional of Netherlandish origin, measuring 19 x 13.5 cm. Contains antiphons, hymns, responsories, etc., and 1 two-part work ("Ad festum leticie .. benedicat dominum"; fol. 55r-56v); music in Gothic chant notation with mensural elements. The principal part of the manuscript (fol. 1-124) was copied in the late 15th or early 16th century. The manuscript was in the possession of the order of nuns at Schonenberg 1533-1623; toward the end of the 19th century it was in the possession of Wilhelm Baumker, from whose estate it passed in 1905 to the Universitats- und Stadtbibliothek Koln. 3297.530.50.1 (microfilm).