The tornado footage and sounds were recycled from Il mago di Oz (1939). It was also re-used in Due cuori in cielo (1943).
Third of six movies that paired June Allyson and Van Johnson. In order, they were Due ragazze e un marinaio (1944), Nuvole passeggere (1946), L'isola sulla montagna (1947), La sposa ribelle (1948), L'ingenua maliziosa (1951), and La porta del mistero (1953).
In L'isola sulla montagna (1947), the Stinson L-1 Vigilant appears to be hovering and while the Stinson folks bragged that their Stinson L-1 Vigilant could actually accomplish this feat, in a strong headwind, the L-1 could be seen slowly flying backward.
Location filming for L'isola sulla montagna (1947) took place in King City, Arcadia. Aerial sequences took place at the U.S. Navy's North Island, San Diego, and in the coastal waters off Coronado Island, California. The use of the Ryan Aircraft plant in San Diego as the site for the lead actor's test flying adventures included a lively wringing out of the Stinson L-1 Vigilant[N 1] and Ryan ST trainer, flown by Paul Mantz.
"Lux Radio Theater" broadcast a 60-minute radio adaptation of the movie on
January 24, 1949 with Van Johnson reprising his film role.