ABT's site gives this information, which doesn't seem to answer the question:
World Premiere: Royal Danish Ballet, Royal Theatre, Copenhagen, 1/15/48 Designer: Erik Nordgreen Original Cast: Margot Lander, Hans Brenaa, Svend Erik Jensen, Inge Sand, Inge Goth ABT Premiere: 54th Street Theatre, New York, 10/5/61 Cast: Toni Lander, Royes Fernandez, Bruce Marks, Eleanor D'Antuono, Elisabeth Carroll