Columbia subject headings:
Harvard subject headings:
Cage, John--Manuscripts--Facsimiles.
Canons, fugues, etc.
Music--Manuscripts--Facsimiles.
Septets (Clarinet, flute, trumpet, violin, violas (2), cello)--Scores.
Princeton subject headings:
Canons, fugues, etc.
Scores.
Septets (Clarinet, flute, trumpet, violin, violas (2), cello)--Scores.