Columbia subject headings:
Harvard subject headings:
Helena, Saint, approximately 255-approximately 330--Songs and music.
Music--Manuscripts--Facsimiles
Oratorios--Scores.
Princeton subject headings:
Helena, Saint, approximately 255-approximately 330--Songs and music.
Music--Manuscripts--Facsimiles.
Oratorios--Scores.
Oratorios.
Scores.