1959, 10 april, NEW YORK, USA : The movie star MARLENE DIETRICH (1901 - 1992), appearing in evening-suite for the occasion with a pony at the APRIL IN PARIS ball at the Waldorf-astoria Hotel. The pony appeared in the show. The ball, the theme of wich was A CIRCUS AT THE COURT OF LOUIS XV, marked the 150Th anniversary ot the Gala event in New York