In this animated adaptation of the Hans Christian Andersen story, little playmates Gerda (voice of Sandra Dee) and Kay (voice of Tommy Kirk) are separated by the vengeful Queen of winter. 1959. Part 1 of 2.
Original movie from Internet Archive
Movie info from IMDB
The original Snow Queen @Wikipedia
Story translated by Jean Hersholt @Hans Christian Andersen Center
Audiobook by Librivox
Art Linkletter obituary @NYTimes.com