With the exception of the Hollywood sound stage segments, exteriors for this movie were shot on location in Vinalhaven, ME.
Some of the locals were also used as extras in the background.
My father "temped" for 20th Century Fox during the production. He drove a equipment truck to the different set locations on the island.
The equipment had to come by barge as the local ferry was way too small to handle all the equipment needed by the studio.
I don't believe this movie has been out of the vault for many years. It used to play on late night TV back in the 60's. As I remember it, there's really no reason to bring it back.