Columbia subject headings:
Bartók, Béla, 1881-1945--Manuscripts--Facsimiles.
Concertos (Viola)--Scores.
Music--Manuscripts--Facsimiles.
Harvard subject headings:
Bartók, Béla, 1881-1945--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Musical sketches
Princeton subject headings:
Bartók, Béla, 1881-1945--Manuscripts--Facsimiles.
Concertos.
Music--Manuscripts--Facsimiles.
Musical sketches.