"Miracle on 34th Street" was released in June of 1947 and has been warming the hearts of viewers each Christmas ever since. Natalie Wood portrayed Susie, the little girl who did not have an imagination but eventually learned to believe. This classic has been remade at least twice since the debut of the original and in December 2015 Turner Classic Movies re-released the film in select movie theaters. In October, Macy's honored the movie by reviving a black and white version of a balloon float by the name of Harold. There are four fun facts about the movie that viewers may not have been aware of. They involve Woods' three co-stars in the film, John Payne, Edmund Gwen, and Maureen O'Hara.

Many facts from this article come from a report by website Mental Floss.

Natalie Wood believed Gwen really was Santa and he had been in 1946

In the classic Christmas movie, Edmund Gwen portrays Kris Kringle, who believes he is the one and only real Santa Claus [VIDEO]. In 1946, Gwen actually was hired for the role of Saint Nick. When he is shown in "Miracle on 34th Street" riding in the sleigh, it is real footage from when he was Santa Claus a year earlier. Years later, Natalie Wood admitted that she really believed that Gwen was Santa because his beard was not fake. Wood was only eight years old at the time the film was being made.

In her biography, Maureen O'Hara acknowledged that the footage of Gwen waving to the crowd was from the Macy's parade a year earlier. She said they had to scramble in order to shoot scenes and could only do one take of each.

O'Hara also said that it was bitterly cold shooting scenes for the Christmas classic. She and Edmund Gwen envied Wood and John Payne, who were watching the parade from the warmth of indoors.

Freezing cameras and a sequel to 'Miracle on 34th Street.'

According to TCM, the weather was so cold that cameras actually froze during the last scene of "Miracle on 34th Street" when Susie was in her dream house. Production had to shut down on the heartwarming film, as they waited for the equipment to thaw out. A kind-hearted neighbor allowed the cold cast members [VIDEO] to come inside her home to warm up. Maureen O'Hara later treated the woman and her husband to a meal at an exclusive restaurant as a way to say thank you.

O'Hara also said that John Payne loved the Christmas classic so much he wanted to do a sequel and they discussed the possibility for years. She stated that Payne actually wrote a screenplay although she never saw it. He was supposed to send a copy to the "Miracle on 34th Street" co-star, but unfortunately passed away before he was able to do so. O'Hara wondered often whatever happened to the manuscript.