The 'Proust Questionnaire' was devised by a Henry Proust in the late 19th Century, with the intention that the answers would reveal aspects of the participant's personality. Henri Pessar, who took the photograph included in this lot recalls that Epstein, along with John, Paul, George and Ringo completed individual questionnaires for him during a flight he shared with them between Paris and Lyon in 1966. After completion Pessar passed them on to a psychologist who provided him with a profile for publication.