Unknown, Unknown, Unknown, Unknown (lost) Date:1300 -1400 Dimensions:Unknown xUnknown Type:Music Shelfmark:Unknown (lost) Provenance:Unknown Provenance Contents:Parchment strip with Guillaume de Machaut “Le lay mortel.” Bibliography:Droz, E. “Un Manuscrit de Guillaume de Machault.” Revue de Musicologie 8 (1927): 44. Earp, Lawrence. Guillaume de Machaut: A Guide to Research. London: Routledge, 1996, 104.