Correspondence; Timings; Soloists; Program Changes; LS-Dimitri Mitropoulos; Biography of Dimitri Mitropoulos by Dorle Jarmel; Rejected proposal by Dimitri Mitropoulos that one concert in each subscription series be devoted entirely to "unfamiliar music"; Health problems of Dimitri Mitropoulos; Performances of Sophocles' "Electra" by National Theatre of Greece with music by Dimitri Mitropoulos; Questionnaire for a biography of Dimitri Mitropoulos in Norwegian encyclopedia "The World of Music"