Darby OGill and the Little People (1959)
A wily old codger matches wits with the King of the Leprechauns and helps play matchmaker for his daughter and the strapping lad who has replaced him as caretaker
The Day the Earth Caught Fire (1961)
When the U S and Russia unwittingly test atomic bombs at the same time, it alters the nutation axis of rotation of the Earth
Third Man on the Mountain (1959)
A boy attempts to realize his fathers dream of climbing an alpine peak known as the Citadel