Who Is is a "four-country, thirteen-programme, colour-TV series" for which Delia created electronic title music in March 1968 at Kaleidophon for Allan King Associates of Toronto. The series producer was Robert Graef and other directors Paul Davies, Denis Postle and Dick Fontaine.
DD101409: List of people involved, hours spent on it and list of library tapes
DD101436: "1st master mix": Plan and diagrammatic score
DD101457: Colourful logo
DD101526: "N.U.": Notes and sequence/timing of visuals
DD101556: "N.U.": Drawings of visuals
The Performing Right Society's list of works by Delia Ann Derbyshire has:
Title: Who Is 01 Writer(s): Derbyshire Delia Ann Creation date: 22 March 2002