Columbia subject headings:
Music--Manuscripts--Facsimiles.
Webern, Anton, 1883-1945--Manuscripts--Facsimiles.
Harvard subject headings:
Music--Manuscripts--Facsimiles
Musical sketches.
Webern, Anton, 1883-1945--Manuscripts--Facsimiles.
Princeton subject headings:
Music--Manuscripts--Facsimiles.
Webern, Anton, 1883-1945--Manuscripts--Facsimiles.