Signed Whitney Museum exhibition trifold 8vo (8 x 10 inch) brochure catalogue, including and introductory essay by Anne d'Harnoncourt, followed by "John Cage at Seventy: Toward a Chronology," and a detailed description list of the works in the exhibition, including scores and prints. Signed in green ink on the front cover by the composer who experimented with the nature of sound and devised new systems of musical notation.