Columbia subject headings:
Electronic music--Scores.
Trios (Trombone, percussion)--Scores.
Harvard subject headings:
Electronic music.
Music--Manuscripts--Facsimiles
Quartets (Trombone, electronics, percussion)--Scores.
Reynolds, Roger, 1934---Manuscripts--Facsimiles.
Princeton subject headings:
Scores.
Trios (Trombone, electronics, percussion)--Scores.