An important item in their collection is this Ursuline music manuscript which is the “oldest known music manuscript in Louisiana history”. This was gifted to a convent of Ursuline nuns from their mother country of France while Louisiana was still a colony in 1754, but it was written in the 1730’s. This photo is the fourth page of the book.
HNOC, (1736). Ursuline Music Manuscript. https://hnoc.org/research-collections/collection-highlights/ursuline-music-manuscript