Back in the Olden Days - no refrigeration!! You bought ice, and kept things cool with and 'ice box'. How did you get the ice? When your grand parents were kids, you had to harvest it from a lake, or buy it from someone that did.
Harvesting Ice - Traditional: (You might want to turn down the sound. They sing 'Winter Wonderland' as background, which has got to be one of the most obnoxious songs ever written.)
The Ice Saw:
Harvesting Ice Modern: