Columbia subject headings:
Claudius, Emperor of Rome, 10 B.C.-54 A.D.--Drama.
Keiser, Reinhard, 1674-1739--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Nebuchadnezzar II, King of Babylonia, -562 B.C.--Drama.
Operas--Librettos.
Operas--Scores.
Harvard subject headings:
Music--Manuscripts--Facsimiles.
Operas--Librettos
Operas--Scores
Princeton subject headings:
Operas--Librettos.
Operas--Scores.
Operas.
Scores.