Columbia subject headings:
Casken, John--Manuscripts--Facsimiles.
English horn with instrumental ensemble--Scores.
Music--Manuscripts--Facsimiles.
Septets (Clarinet, English horn, flute, horn, harp, viola, double bass)--Scores.
Harvard subject headings:
Casken, John--Manuscripts--Facsimiles.
English horn with instrumental ensemble--Scores.
Music--Manuscripts--Facsimiles.
Septets (Clarinet, English horn, flute, horn, harp, viola, double bass)--Scores.
Princeton subject headings: