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: Plan and diagrammatic score
- DD101457: Colourful logo
- DD101536: "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