Notebook and loose sheets Spiral bound notebook with missing covers accompanied by loose pages torn from the notebook. The loose pages and notebook were found together. The pages contain sketches and drawings; reminders and ‘to-do’ lists; equipment lists; calculations; draft letters; ideas for performance; and lists of drawings [for exhibition?]. Includes the following identified material: notes and sketches for ‘Treadmill’ (/6-7); a draft letter with sketches to the Science Museum offering them ‘apparatus to show the performance of a parachute’ (/10-15); draft text concerning the development of a radio programme for experimental music (/16-19); and brief notes for ‘Mechanical Garden’ (/25); c.1970-1982