Columbia subject headings:
Beethoven, Ludwig van, 1770-1827--Manuscripts--Facsimiles.
String quartets--Scores.
Harvard subject headings:
Beethoven, Ludwig van, 1770-1827--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
String quartets--Scores
Princeton subject headings:
Beethoven, Ludwig van, 1770-1827--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Scores.
String quartets--Scores.