Columbia subject headings:
Caractacus, active 48-51--Drama.
Operas--Scores.
Harvard subject headings:
Princeton subject headings:
Bach, Johann Christian, 1735-1782--Manuscripts--Facsimiles.
Caractacus, active 48-51--Drama.
Music--Manuscripts--Facsimiles.
Operas--Scores.
Operas.
Scores.