Though this film was set in 1939, on the New York scenes RKO Palace neon sign shows William Holden, Alec Guinness The Bridge on the River Kwai (1957), Astor shows Bob Hope, Fernandel in Paris Holiday (1958) with Anita Ekberg and Liberty shows Marlon Brando The Young Lions (1958).
When filming scenes of the Trapp family in New York, no attempts were made to duplicate the year 1939. All the cars and sights of New York City were from 1957.
For release in America, the film and its prequel The Trapp Family (1956) were dubbed in English and edited into a single feature film with a run time of 106 mins.