Columbia subject headings:
Music--Manuscripts--Facsimiles.
Operas--Scores.
Wagner, Richard, 1813-1883--Manuscripts--Facsimiles.
Harvard subject headings:
Music--Manuscripts--Facsimiles
Operas--Scores
Wagner, Richard, 1813-1883--Manuscripts--Facsimiles.
Princeton subject headings:
Music--Manuscripts--Facsimiles.
Operas--Scores.
Operas.
Scores.
Wagner, Richard, 1813-1883--Manuscripts--Facsimiles.