 After his retirement from Oxford, he was King Juan Carlos Professor of Spanish History at New York University in 1992.Carr's successor as Warden of St Antony's, Ralf Dahrendorf, has described Carr's tenure of the post as the College's 'Fiesta days'.As a historian and Hispanist, Carr's main interest lay in the vicissitudes of 19th and 20th century Spain, and he was also a specialist in Latin American and Swedish history.