Columbia subject headings:
Keiser, Reinhard, 1674-1739--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Operas--Librettos.
Operas--Scores.
Harvard subject headings:
Music--Manuscripts--Facsimiles.
Operas--Librettos
Operas--Scores
Princeton subject headings:
Operas--Librettos.
Operas--Scores.
Operas.
Scores.