SUPPLEMENTARY SEIBER COLLECTION. Vol. I. Elegy, for viola and orchestra; 1951-1953. Autograph short score and sketches, in ink and pencil. Published London: Schott & Co., [1954]. ff. 11. 267 x 361mm.
SUPPLEMENTARY SEIBER COLLECTION. Vol. II. Realisation for strings of works by William Brade (f. 1), Giovanni Gabrieli (ff. 4-17), Hans Leo Hassler (ff. 18-22), John Hilton (ff. 23-24), Orlando di Lasso (ff. 25-26) and Giovanni Battista Vitali (ff. 27-28); n.d. Chiefly autograph full scores; the ...
SUPPLEMENTARY SEIBER COLLECTION. Vol. III. Descriptive note on the concert version of Bach's 'Kunst der Fuge' prepared by Sieber; n.d. Partly typewritten. ff. 27. 255 x 203mm. Johann Sebastian Bach, composer: Notes on Bach's `Kunst der Fuge' by M. Seiber: bef. 1960.